Standa 8SMC1-USBhF Manuale utente

8SMC1-USBhF

1.5A Microstep Driver with USB Interface

User Manual

Note: Information in this manual is believed to be accurate and reliable. However no responsibility is assumed

for the consequences of its use or for any infringement of patents or other right of third parties which may

result from it use. Specifications are subject to change without notice.

Note: Windows are registered trademark of Microsoft Corporation, LabVieW and NI VISA is registered

trademark of National Instruments Inc. All other products and corporate names appearing in this manual may

or may not be registered or copyrights of their respective companies, and are used only for identification or

explanation and to the owner’s benefit, without intent to infringe.

1/14/2008 www.standa.lt Page 1 of 83

Index

1General information........................................................................................................................5

1.1 Features ...................................................................................................................................5

1.2 Description...............................................................................................................................5

1.3 Applications..............................................................................................................................6

1.4 Compatibility............................................................................................................................6

1.4.1 Connectivity .....................................................................................................................6

1.4.2 Stepper motors ...............................................................................................................6

1.5 Warranty ..................................................................................................................................6

2Functional description ....................................................................................................................7

2.1 Board overview .......................................................................................................................7

2.2 External connections ............................................................................................................10

2.2.1 Power..............................................................................................................................10

2.2.1.1 USB Powered logic mode.....................................................................................10

2.2.1.2 5V DC powered logic mode.................................................................................11

2.2.1.3 Single 7-12V DC power supply mode ................................................................11

2.2.1.4 Double power supply mode ................................................................................12

2.2.2 Stepper motor connection...........................................................................................12

2.2.3 Connection of external sensors ..................................................................................13

2.2.4 Limit switches................................................................................................................14

2.2.5 Emergency Stop switch................................................................................................15

2.2.6 Revolution sensor .........................................................................................................15

2.2.7 Encoder ..........................................................................................................................16

2.2.8 Synchronization Out .....................................................................................................18

2.2.9 Synchronization In........................................................................................................18

2.2.10 Manual control knobs...................................................................................................19

2.2.11 Local indication LEDs ...................................................................................................19

2.2.12 USB In/Out.....................................................................................................................20

3Specifications.................................................................................................................................21

3.1 Electrical.................................................................................................................................21

3.2 Motion.....................................................................................................................................21

3.3 Remote control......................................................................................................................21

3.4 Mechanical .............................................................................................................................22

3.5 Wiring diagram......................................................................................................................23

3.5.1 Wiring diagram for multi-purpose 40 pin connector ...............................................23

3.5.2 Wiring diagram for Stepper motor connector ..........................................................24

3.6 EMC.........................................................................................................................................24

4Installation .....................................................................................................................................25

4.1 Software installation.............................................................................................................25

4.1.1 SMCVieW installation....................................................................................................25

4.1.2 MicroSMC driver installation........................................................................................27

4.1.3 MicroSMC for WM installation .....................................................................................30

4.2 Hardware installation ...........................................................................................................34

4.2.1 Current sense resistors ................................................................................................34

4.3 First start on Windows XP ...................................................................................................35

4.4 First start on Windows Vista ...............................................................................................37

4.5 Switching between NI VISA and MicroSMC drivers on Windows XP ............................38

4.6 Switching between NI VISA and MicroSMC drivers on Windows Vista ........................40

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4.7 Known USB driver installation problems ...........................................................................44

5Application SMCVieW ...................................................................................................................46

5.1 General information..............................................................................................................46

5.2 Main screen............................................................................................................................46

5.2.1 General view..................................................................................................................46

5.2.2 Positioners and axes names........................................................................................47

5.2.3 Current and Destination positions..............................................................................47

5.2.4 Speed and precision .....................................................................................................48

5.2.5 Status and power..........................................................................................................48

5.2.6 Position slider ................................................................................................................48

5.2.7 Reset and standoff .......................................................................................................49

5.3 Main menu .............................................................................................................................49

5.4 Setup ......................................................................................................................................50

5.4.1 Buttons ...........................................................................................................................50

5.4.2 Positioner .......................................................................................................................50

5.4.3 Positioner -> Picture ....................................................................................................51

5.4.4 Positioner -> Wiring .....................................................................................................51

5.4.5 Controller identifier.......................................................................................................52

5.4.6 Power management .....................................................................................................52

5.4.7 Manual control...............................................................................................................53

5.4.8 Manual control -> Acceleration Curve.......................................................................54

5.4.9 Reset and Standoff.......................................................................................................54

5.4.10 Limit switches................................................................................................................55

5.4.11 Revolution sensor .........................................................................................................55

5.4.12 Encoder ..........................................................................................................................56

5.4.13 Synchronization.............................................................................................................57

5.4.14 Calibration......................................................................................................................58

5.4.15 Backlash compensation................................................................................................59

5.4.16 Acceleration ...................................................................................................................60

5.4.17 Safety..............................................................................................................................60

6VI’s library......................................................................................................................................62

6.1 General information..............................................................................................................62

6.1.1 Find Devices (uSMC) ....................................................................................................63

6.1.2 Initialize All Structures .................................................................................................63

6.1.3 Set Current Position (uSMC) .......................................................................................63

6.1.4 Set Mode (uSMC)..........................................................................................................63

6.1.5 Set Parameters (uSMC) ...............................................................................................63

6.1.6 Save Parameters to Flash (uSMC)..............................................................................63

6.1.7 Get Serial (uSMC) .........................................................................................................63

6.1.8 Get State (uSMC)..........................................................................................................63

6.1.9 Get Version (uSMC)......................................................................................................64

6.1.10 Start (uSMC)..................................................................................................................64

6.1.11 Stop (uSMC) ..................................................................................................................64

6.1.12 Load Profile (uSMC)......................................................................................................64

6.1.13 Update Speed Ctl (uSMC)............................................................................................64

6.2 Structures...............................................................................................................................64

6.2.1 Mode ...............................................................................................................................64

6.2.2 Parameters.....................................................................................................................65

6.2.3 State................................................................................................................................67

6.2.4 StartPlus .........................................................................................................................67

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6.2.5 Position...........................................................................................................................69

6.3 Examples................................................................................................................................69

7Dynamic link library USMCDLL.dll for Win2000/XP .................................................................70

7.1 New version information......................................................................................................70

7.2 General information..............................................................................................................70

7.3 File list ....................................................................................................................................70

7.4 MicroSMC.exe ........................................................................................................................71

7.5 Functions................................................................................................................................71

7.5.1 General information......................................................................................................71

7.5.2 Functions list..................................................................................................................71

7.5.3 USMC_Init ......................................................................................................................72

7.5.4 USMC_GetState.............................................................................................................72

7.5.5 USMC_SaveParametersToFlash ..................................................................................73

7.5.6 USMC_GetMode ............................................................................................................73

7.5.7 USMC_SetMode.............................................................................................................74

7.5.8 USMC_GetParameters ..................................................................................................74

7.5.9 USMC_SetParameters ..................................................................................................75

7.5.10 USMC_GetStartParameters..........................................................................................75

7.5.11 USMC_Start....................................................................................................................76

7.5.12 USMC_Stop ....................................................................................................................76

7.5.13 USMC_SetCurrentPosition ...........................................................................................77

7.5.14 USMC_GetEncoderState...............................................................................................78

7.5.15 USMC_GetLastErr..........................................................................................................78

7.5.16 USMC_Close...................................................................................................................79

7.6 Structures...............................................................................................................................79

7.6.1 USMC_Devices...............................................................................................................79

7.6.2 USMC_Parameters ........................................................................................................79

7.6.3 USMC_StartParameters................................................................................................80

7.6.4 USMC_Mode...................................................................................................................80

7.6.5 USMC_State ...................................................................................................................81

7.6.6 USMC_EncoderState.....................................................................................................81

7.7 Examples................................................................................................................................81

7.7.1 C++ example ................................................................................................................81

8Dynamic link library USMCDLL.dll for WM ................................................................................82

8.1 General information..............................................................................................................82

8.2 File list ....................................................................................................................................82

8.2.1 Host PC files...................................................................................................................82

8.2.2 Mobile device files.........................................................................................................82

8.3 Functions................................................................................................................................83

8.4 Test Applications...................................................................................................................83

8.5 Examples................................................................................................................................83

8.5.1 C++ example ................................................................................................................83

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1General information

1.1 Features

Electrical

Average current per phase of stepping motor up to 1.5A

Short circuit, overcurrent, overvoltage and temperature protections

Screw mounted and easy to change current sense resistors

Multi-purpose 40 pin connector for embedded applications

A number of additional connectors (15 pin D-Sub, USB type A, 2x USB type B, DC input) for

stand alone applications

Different ways of power supply, including single power, dual power and USB power (last for

8SMC1-USBhF logic only)

Motion

Resolution: full step, 1/2, 1/4,

1/8

Speed up to 5000 steps/s

Programmable speed and trip

points

Programmable accel and decel

ramps

Soft start/stop mode

Synchronization I/O

Control

Two knobs and three LEDs for

manual control and local

indication

Two programmable limit

switches and emergency stop

switch

Figure 1. 8SMC1-USBhF

Quadrature encoder or

revolution sensor support

Remote control via USB 1.1

interface (up to 12 Mbps)

Embedded 3-port USB Hub, two USB ports are free for other USB device connections

Graphical user interface for Windows 2000/XP/Vista

Drivers and dynamic link library for Windows 2000/XP/Vista/Mobile host programming

Set of virtual instruments for National Instruments LabVieW

1.2 Description

The 8SMC1-USBhF controller is designed to drive one bipolar stepping motor by local

and/or remote means. Local control and indication are implemented by two knobs and three

LEDs. Remote control and monitoring are implemented via USB interface from PC. Inputs for

two limit switches, emergency switch and revolution sensor are provided.

The 8SMC1-USBhF incorporates PWM chopper type sinusoidal micro step bipolar

stepping motor driver, fully integrated mixed-signal System-on-a-Chip MCU, USB controller

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and 3-port USB hub on one board. Rated current for each stepping motor is set by selection

of two current sense resistors. The latter are screw mounted and easy to change. Sufficient

set of resistors is supplied with 8SMC1-USBhF. Controller features include built in over

temperature, over voltage, short circuit and reverse supply protections. There is a potential

of 40% current reduction in hold mode. In order to improve the high speed performance and

to reduce heating separate supply for logic and stepping motor can be used. Logic of 8SMC1-

USBhF can be powered by three different ways: directly from USB, from external +5V DC

power supply, from external 7-12V power supply. Emergency stop switch for unconditional

stepping motor power down is available. It may be utilized when safety is necessary. There

are two ways of communication to 8SMC1-USBhF board: by multi-purpose 40 pin connector

(convenient for embedded applications) or by a number of special additional connectors (15

pin D-Sub for stepping motor, USB type A as USB input, 2x USB type B as USB outputs, DC

input for stepper motor power supply). Embedded 3-port USB hub allows cascading of the

8SMC1-USBhF boards: it possible to connect 8SMC1-USBhF board to each of two free

downstream USB ports on another 8SMC1-USBhF board. Thus, it is possible to connect up to

30 devices per USB host controller in tree-like structure without any additional USB hubs.

The built-in powerful MCU on the 8SMC1-USBhF allows the user, via USB interface, to

control parameters such as position, acceleration/deceleration ramps, velocity, direction,

resolution, drive current, etc., to form simple or complex motions. Most of all commands are

executed on-the-fly. All parameters can be saved on PC or in MCU flash memory. The

8SMC1-USBhF has a variety of built-in functions, including local control, programmable limit

switch inputs, homing algorithm, quadrature encoder or revolution sensor support, additional

input/output for synchronization.

Thus 8SMC1-USBhF is compact, all-in-one, low cost microstep stepping motor driver

with high functionality and modern USB interface.

1.3 Applications

Controller can be used to drive any motorizes devices if their stepper motor parameters

match specifications for 8SMC1-USBhF.

1.4 Compatibility

1.4.1 Connectivity

Controller is designed to work with IBM AT compatible computer systems (with

Pentium or better processors) with Microsoft Windows 2000/XP/Vista operation systems or

mobile devices with Microsoft Windows Mobile 5.0 and higher. Only presence a USB host port

on your host device is necessary.

1.4.2 Stepper motors

Controller can operate with stepper motors according to the technical specification and

wiring requirements. Maximum allowable average phase current is 1.5A, rated voltage is 40V.

1.5 Warranty

Producer warrants the controller card 8SMC1-USBhF for the period of 1 year from the

date of sale.

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2Functional description

2.1 Board overview

Appearance of the 8SMC1-USBhF printed circuit board is shown on Figure 2.

Figure 2. Appearance of 8SMC1-USBhF printed circuit board

Power driver

- Sinusoidal micro step bipolar stepping motor driver. It

controls the stepper motor.

Warning: The Power driver IC fin (rear) is electrically connected to the rear of the

chip. When current flows to the fin, the Power driver IC malfunctions. If there is any

possibility of a voltage being generated between the ground of the 8SMC1-USBhF and the

fin, either ground the fin or insulate it.

Warning: There are appreciable power dissipation on Power driver (up to 6 W

depending on input voltage and rated current of stepper motor). Appropriate heatsink must

be used to maintain temperature range. Heating the Power driver over 85 oC is forbidden!

USB hub

- This chip provides one upstream port and three

downstream ports in compliance with the USB version 1.1 specification. Ports support both

full-speed and low-speed devices by automatically setting the flow rate according to the

speed of the device attached to the ports. Upstream port is wired to

USB In

and

connectors and used for connections with computer or higher USB hub. One of downstream

ports is wired to

MCU

- Full Speed USB, 16K ISP FLASH Microcontroller. This chip

provide interface between computer and stepper motor. It keeps all current data about

stepper motor state and sends it to computer on demand.

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USB Out

- Two USB type A connectors are placed on the rear of

8SMC1-USBhF printed circuit board. It allows the connection of other USB devices or lower

USB hubs.

JP1

- Enable/Disable Emergency stop switch jumper, see Figure

and Figure 4.

Figure 3. Emergency stop switch Enabled Figure 4. Emergency stop switch Disabled

USB In

- USB type B connector is placed on the front of 8SMC1-

USBhF printed circuit board. It is used for connections with computer or higher USB hub.

Stepper motor connector

- This 15 pin D-Sub (female) connector is used for

connection of 8SMC1-USBhF device to stepper motor. All additional wiring (limit switches,

emergency limit switch, revolution sensor and corresponding power supply) is included in this

connector too. Dimensions of stepper motor connector see on Figure 5. For more information

see 2.2.2.

Figure 5. Stepper motor connector: dimensions and pinout

Current sense resistors

- Pair of current sense resistors is necessary to keep correct

rated current on windings of stepper motor. Resistors are screw mounted and easy to

change. Sufficient set of resistors is supplied with 8SMC1-USBhF.

Warning: Current sense resistors must be chosen for every stepper motor according to

its rated current and connection diagram. For more details see 4.2.1. of User Manual. Wrong

current sense resistors can cause the malfunction of 8SMC1-USBhF or damage stepper

motor.

Voltage regulator

- It is used for supply board logic when external 7-12V

power supply for logic is used (for more details see 2.2.1).

Warning: There is some power dissipation on Voltage regulator (up to 0.5 W

depending on input voltage). Appropriate heatsink may be required. Heating the Voltage

regulator over 85 oC is forbidden!

JP2

- Board logic power supply jumper. A way of logic power

supply is determined by this jumper. There are three different ways: directly from USB (as

1/14/2008 www.standa.lt Page 8 of 83

shown on Figure 6), from external +5V stabilized DC power supply (as shown on Figure 7),

from external 7-12V unstabilized DC power supply (as shown on Figure 8).

Figure 6. USB

powered board logic

Figure 7. Board logic powered

by 5V DC power supply

Figure 8. Board logic powered

by 7-12V power supply

Note: If you want to change the power logic jumper position make the following steps:

Turn the power of 8SMC1-USBhF board OFF, unplug the USB In connector, change the JP2

position, turn the power of 8SMC1-USBhF board ON and plug USB In connector back.

Don’t change the JP2 position when USB cable is plugged because it can entail

some mistakes in USB root hub operation.

Connector P1

- Multi-purpose 40 pin connector. All other connectors (USB

In, USB Out, Stepper motor connector and Power In) are duplicated here. This connector is

designed for embedded applications. Only one standard ribbon cable required for all

connections by P1. Connector P1 Pin assignment is shown on Figure 9. Dimensions are

shown on Figure 10.

Figure 9. Connector P1. Pinout

Figure 10. Connector P1. Dimensions.

Note: Some specific contacts (LEDs and knobs for manual control, for example) are only

on connector P1.

Power In

- Low-voltage power socket. 7-40V power input for stepper

motor only or 7-12V power input for stepper motor and board logic. Operating mode is

determined by JP2 and Connector P1.

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Figure 11. Power In connector. Dimensions. Figure 12. Power In connector. Pinout.

Dimensions are shown on Figure 11. Contacts appointment is shown on Figure 12.

Outside contact has 6,3 mm diameter. It is Ground. Central contact has a 2,0 mm diameter.

It is a positive contact for 7-40V stabilized DC power supply connection.

2.2 External connections

2.2.1 Power

8SMC1-USBhF board allows several different ways of power supply connections. They are

shown on Table 1.

Stepper motor supply

USB Powered logic modeUSB powered , for details see 2.2.1.1

5V DC powered logic modePowered by 5V DC , for details see 2.2.1.2

Logic

supply Single 7-12V DC power

supply mode, for details

see

Double power supply

mode, for details seePowered by 7-12V DC

2.2.1.3 2.2.1.4

Table 1. 8SMC1-USBhF power supply modes

Warning: 8SMC1-USBhF power supply must never exceed 40V. Power driver can be

damaged if such exceeding happened.

Note: Exact current consumption from external 7-40V DC power supply for stepper motor

supplying purposes depends on stepper motor rated current and voltage. It is recommended

that rated current and voltage loading of this DC power supply exceed the stepper motor

rated current and voltage. It is true for all ways of power supply connection.

Let’s examine this table more accurately.

2.2.1.1 USB Powered logic mode

In this case logic of 8SMC1-USBhF board is powered by USB; stepper motor is powered

by external 7-40V stabilized DC power supply. Connection diagram for Power In is shown on

Figure 12, for multi-purpose 40 pin connector P1 on Figure 13. Correct position of board logic

power supply jumper (JP2) is shown on Figure 6.

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