GC5 ISMA-B-W0202 Manuale utente

iSMA-B-W0202

User Manual

Modbus

Global Control 5 Sp. z o.o.

Warsaw, Poland

www.gc5.pl

iSMA-B-W0202 Modbus User Manual

version 1.2Page 2 / 49

Introduction ............................................................................................................................................. 4

Revision history ............................................................................................................................................4

Safety rules ...................................................................................................................................................5

Technical specifications ................................................................................................................................6

Dimension.....................................................................................................................................................7

Power supply connection ..............................................................................................................................7

1.5.1 DC power connection .................................................................................................................................7

1.5.2 AC power connection .................................................................................................................................7

Connecting the communication bus ..............................................................................................................8

LED Indication .............................................................................................................................................8

Grounding and shielding...............................................................................................................................9

RS485 Network Termination ........................................................................................................................9

Module configuration....................................................................................................................................9

Communication...........................................................................................................................................10

Special Inputs..............................................................................................................................................10

Digital Outputs............................................................................................................................................ 11

Radio Settings ............................................................................................................................................. 11

Radio Status ................................................................................................................................................12

Configuration registers ......................................................................................................................... 13

Firmware version and module type (30001) ...............................................................................................13

Counter of received messages (30004) .......................................................................................................13

Counter of error messages (30006) .............................................................................................................13

Counter of sent messages (30008) ..............................................................................................................13

Up time (30012)..........................................................................................................................................13

Device actions (40001) ...............................................................................................................................14

Modbus protocol type (40134)....................................................................................................................14

Modbus address (40135).............................................................................................................................14

Baud rate (40136) .......................................................................................................................................14

Stop bits (40137).........................................................................................................................................15

Data bits (40138) ........................................................................................................................................15

Parity bit (40139) ........................................................................................................................................15

Response delay time (40140)......................................................................................................................15

Watchdog time (40141)...............................................................................................................................16

Watchdog for Radio ....................................................................................................................................16

Radio configuration registers ............................................................................................................... 16

Radio TX Power (40242)............................................................................................................................16

Radio Channel (40243) ...............................................................................................................................16

Radio Baud Rate (40244)............................................................................................................................18

Radio AESKEY (40249 – 40256) ...............................................................................................................19

Radio Received Frames Counter (40257) ...................................................................................................19

Radio ERROR Frames Counter (40259).....................................................................................................19

Radio Transmitted Frames Counter (40261)...............................................................................................19

Wireless Device Status (40263 – 40390) ....................................................................................................20

Special inputs connections .................................................................................................................... 21

Connection of Special Input to measure voltage 0 – 10 V..........................................................................21

Connection of Special Input to measure temperature .................................................................................21

Connection of Special Input as a Digital Input (Dry Contact) ....................................................................21

Special inputs MODBUS registers ....................................................................................................... 22

Status of Special Inputs working as Digital Inputs (30017)........................................................................22

Special Input measure voltage 1 – 2 (30071, 30073)..................................................................................22

Special Input measure temperature 1 – 2 (30072, 30074)...........................................................................22

Special Input measure resistance 1 – 2 (30103-30104, 30105-30106).......................................................22

Fast counter (40023-40024, 40025-40026).................................................................................................23

Resetting counters values (40022) ..............................................................................................................23

Special input configuration 1 – 2 (40151 – 40152).....................................................................................24

Filter time of the Special Input 1 – 2 (40159 – 40160) ...............................................................................24

Digital Outputs (relays) connections.................................................................................................... 25

Connecting a solenoid valve to the Digital Output .....................................................................................25

Connecting a resistive load to the Digital Output .......................................................................................25

Digital Outputs (relays) MODBUS registers....................................................................................... 26

iSMA-B-W0202 Modbus User Manual

version 1.2Page 3 / 49

State of Digital Outputs (40018) .................................................................................................................26

Default state of Digital Outputs (40143).....................................................................................................26

Special application modes..................................................................................................................... 27

Operation Mode registers (40176,40180) ...................................................................................................28

8.1.1 Ordinary IO...............................................................................................................................................28

8.1.2 Monostable Relay .....................................................................................................................................28

8.1.3 Bistable Relay ...........................................................................................................................................28

8.1.4 Time Relay NO [ms].................................................................................................................................28

8.1.5 Time Relay NC [ms] .................................................................................................................................29

8.1.6 Time Relay NO [s]....................................................................................................................................29

8.1.7 Time Relay NC [s] ....................................................................................................................................29

8.1.8 Input Forwarding ......................................................................................................................................29

8.1.9 Heating mode............................................................................................................................................30

8.1.10 Cooling mode .......................................................................................................................................31

Command register (40020) .........................................................................................................................32

Block Inputs register (40021) .....................................................................................................................32

Setpoint registers (40178,40182) ................................................................................................................32

Differential registers (40179,40183)...........................................................................................................32

List of Modbus registers........................................................................................................................ 33

List of supported temperature sensors ................................................................................................ 38

iSMA-B-W0202 Modbus User Manual

version 1.2Page 4 / 49

Introduction

iSMA-B-W0202 has been built to allow the extension of RS485 bus by using wireless technology

wherever use of network cable is impossible or unprofitable. Using two iSMA–B–W0202

modules allow to build the wireless 'bridge' for the RS485 by building wireless remote island

(one or more) for devices which communicate via Modbus RTU/ASCII - e.g. iSMA–B–MIX18

or iSMA–B–MIX38.

iSMA-B-W0202 (in addition to the RS485 port and wireless port) is equipped with 2SI (Special

Inputs) and 2DO (Digital Outputs max. 230 VAC/30 VDC 3 A ). It allows to use the device as an

I/O module or light controller communicating on Modbus RTU/ASCII. Algorithm implemented

in the processor allows the user to choose one of the three different modes:

Modbus Bridge

Modbus Bridge and I/O module (Digital Outputs work independent to the Special Inputs states)

Modbus Bridge and light controller (Digital Output states depends on assigned Special Inputs

states ). There are different Operating Modes available (see Special Application modes)

iSMA-B-W0202 is also equipped with a micro USB port which allows to configure the device

without the use of an external power supply (the device is powered through the USB port). This

solution gives the user an easy way, using 2 laptops, carry out the tests within the existing facility.

Revision history

Rev

Date

Description

1.0

2015.04.28

First edition

1.1

2016.12.29

The reason for the creation of new version of the document:

New functions:

•New HVAC functions Heating and Cooling based on output thermostatic control with a setpoint

and differential value setting;

•Added new input mode Time Relay NC [ms], Time Relay NO and NC in seconds, Input

Forwarding;

•Added new input mode: Ordinary IO, Monostable Relay, Bistable Relay, Time Relay NO and NC

[ms], Time Relay NO and NC in seconds, Input Forwarding, Heating, Cooling with corresponding

Modbus registers;

•Added reset output to default after input mode change

Improvements:

•Added power Led flashing after IO watchdog triggered;

•Changed IO watchdog reset after read/write registers through USB;

•Added immediately detecting sensors short circuit and disconnection regardless of filter settings

on universal inputs;

1.2

2018.12.17

•Added watchdog functionality for the Radio, if the radio does not receive the correct packet for

180 seconds, the radio module will restart.

Table 1 Revision history

iSMA-B-W0202 Modbus User Manual

version 1.2Page 5 / 49

Safety rules

•Note: Incorrect wiring of this product can damage it and lead to other hazards. Make sure the

product has been correctly wired before turning the power ON.

•Before wiring, or removing/mounting the product, be sure to turn the power OFF. Failure to

do so might cause electric shock.

•Do not touch electrically charged parts such as the power terminals. Doing so might cause

electric shock.

•Do not disassemble the product. Doing so might cause electric shock or faulty operation.

•Use the product within the operating ranges recommended in the specification (temperature,

humidity, voltage, shock, mounting direction, atmosphere etc.). Failure to do so might cause fire

or faulty operation

•Firmly tighten the wires to the terminal. Insufficient tightening of the wires to the terminal

might cause fire.

iSMA-B-W0202 Modbus User Manual

version 1.2Page 6 / 49

Technical specifications

Power supply

Voltage

24 V AC/DC ± 20%

Power consumption

2 W @ 24 VDC; 4.5 VA @ 24 VAC

Special Inputs

No. of inputs

Temperature input

Measurement with attached RTDs

accuracy ±0.1˚C at 25˚C

Voltage input

Voltage measurement from 0 to 10 V

Input impedance 100 kΩ

measurement accuracy ±50 mV

Resistive input

Measurement of resistance from 0 to 1000 kΩ

Resistance measurement method

The voltage divider

Dry contact input

Output current ~1 mA

Measurement resolution

12-bits

Fast counters

50 Hz/100 Hz

Digital Outputs (relays)

No. of outputs

Resistive load

3 A @ 230 VAC or 3 A @ 30 VDC

Inductive load

75 VA @ 230 VAC or 30 W @ 30 VDC

Interface

Mini USB

For power up and configuration

RS485

Up to 128 devices

Communication protocol

Modbus RTU, Modbus ASCII

Baud rate

From 1200 to 115200 bits/s

Address

0 to 127

Radio

Frequency

868 MHz

Max output power

+20 dBm (100 mW)

Sensitivity

-120 dBm

Radio Channels

1 ÷ 8

Encryption

AES-128

Baud Rate

From 1200 to 200000 bits/s

External antenna

SMA socket

Ingress protection

IP40

Temperature

Storage

– 40˚C to +85˚C

Operating

– 10˚C to +50˚C

Humidity

Relative

5 to 95%

Connectors

Type

Rising Clamp

Maximum cable size

2.5 mm2

Dimension

Width

17 mm

Length

56 mm

Height

90 mm

iSMA-B-W0202 Modbus User Manual

version 1.2Page 7 / 49

Dimension

Figure 2 Dimension

Power supply connection

1.5.1 DC power connection

Figure 2 DC power supply connection

1.5.2 AC power connection

Figure 3 AC power supply connection

iSMA-B-W0202 Modbus User Manual

version 1.2Page 8 / 49

Connecting the communication bus

Figure 4 RS485 connection

LED Indication

Figure 5 Top panel W0202

•The power LED is ON (green) when the module is running/runs properly.

•Communication LED is ON (orange) for 20 ms after sending each message. If the module

receives/sends a lot of messages LED can be lit continuously.

•LEDs indicate the status of the Special Inputs are lit when resistance connected to the input is

less than 1 kΩ (Dry Contact input is active).

•WARNING! The LED also lights up when voltage connected to the input has a very low

potential.

•LEDs indicate the status of the Digital Outputs are lit when output is enabled.

iSMA-B-W0202 Modbus User Manual

version 1.2Page 9 / 49

Grounding and shielding

In most cases, IO modules will be installed in an enclosure along with other devices which

generate electromagnetic radiation. Relays, contactors, transformers, motor invertors etc. are the

examples of these devices. This electromagnetic radiation can induce electrical noise into both

power and signal lines, as well as direct radiation into the module causing negative effects on the

system. Appropriate grounding, shielding and other protective steps should be taken at the

installation stage to prevent these effects. These protective steps include control cabinet

grounding, cable shield grounding, protective elements for electromagnetic switching devices,

correct wiring as well as consideration of cable types and their cross sections.

RS485 Network Termination

The transmission line effects often present problem on data communication networks. These

problems include reflections and signal attenuation.

To eliminate the presence of reflections from the end of the cable, the cable must be terminated

at both ends with a resistor across the line equal to its characteristic impedance. The both ends

must be terminated since the direction of propagation is bidirectional. In the case of an RS485

twisted pair cable. This termination is typically for 120 Ω.

Module configuration

W0202 can be configured by RS485 Modbus registers or directly by USB connection and iSMA-

Configurator software. The iSMA-Configurator can be downloaded from www.support.gc5.pl.

When the module is connected, it appears in the hierarchy tree window (left part of the screen).

The next step is to read module configuration using the “Read Module” button or to read

configuration from a file using the “Load From File” button.

If you want to save changes in the module, you need to use the “Write Module” button. This

command writes all parameters down to the module.

WARNING! Radio settings only takes effect after the module restarting.

iSMA-B-W0202 Modbus User Manual

version 1.2Page 10 / 49

Communication

The screen below shows configuration options for RS485 bus.

Figure 6 Communication options

Special Inputs

The screen below shows configuration options for Special Inputs.

Figure 7 Special Inputs configuration

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