KEBCO F5 COMBICOM ModBus Manuale utente

12/2003

CM.F5.010-K000

BETRIEBSANLEITUNG

INSTRUCTION MANUAL

KEB COMBICOM ModBus

Seite GB - 3 ......... GB - 12

GB - 3

Table of Contents

1. ModBus Interface ........................................................................4

1.1 Ordering Information....................................................................................... 4

Hardware Description ...................................................................................... 5

1.2 ModBusTransmission Speed ......................................................................... 5

1.3 Diagnosis Interface .......................................................................................... 5

2. Functions ....................................................................................5

2.1 Slave Addressing............................................................................................. 5

2.2 Parameter Addressing ..................................................................................... 5

2.3 ModBus Functions .......................................................................................... 6

2.4 User Defined Functions Defined By KEB ....................................................... 7

2.4.1 Function 100: Read Registers32 ........................................................................ 7

2.4.2 Function 101:Write Registers32 ........................................................................ 7

2.5 FieldbusWatchdog .......................................................................................... 7

3. Operator Parameters ..................................................................8

4 Annex.........................................................................................12

4.1 Table of Operator Parameters ....................................................................... 12

4.2 Error Codes of Exception Response ............................................................ 12

5. References ................................................................................12

GB - 4

F5 ModBus Operator: 00.F5.060-A000

Utilities for the diagnosis interface

HSP5 cable between PC and adapter: 00.F5.0C0-0001

Adapter DSUB / Western: 00.F5.0C0-0002

1. ModBus

Interface

1.1 Ordering Information

Hardware Description

SUBD9 (Female) connector is supplied for connecting to the ModBus. This connector

supports the RS232 or alternatively the RS485 transmission standard.The assignment

of the connector is as follows :

Pin Name Description

1 NC Not used

2 RS232_TxD RS232-Tx-Signal

3 RS232_RxD RS232-Rx-Signal

4 RS485_RxD(A) RS485-Rx-Signal-A

5 RS485_RxD(B) RS485-Rx-Signal-B

6 VCC Power supply of the serial interface

7 GND Reference potential of the serial interface

8 RS485_TxD(A) RS485-Tx-Signal-A

9 RS485_TxD(B) RS485-Tx-Signal-B

ModBus Interface

MDB: This green LED shines if

a ModBus service is

running.

ERROR: This red LED blinks if the

frequency inverter control

is in error state.

It shines constantly if the

frequency inverter is rea-

dy for operation.

If this LED is constantly

off then there is no power

supply.

X6B: Diagnosis interface

X6C: ModBus interface

connector (SUBD9

female).

ANTRIEBSTECHNIK

START

STOP

FUNC.

SPEED

ENTER

F/R

SDO

PDOUT

PDIN

X6B

X6C

COMBIVERT

GB - 5

Value Meaning

0 1200 Bit/s

1 2400 Bit/s

2 4800 Bit/s

3 9600 Bit/s

4 19200 Bit/s

5 38400 Bit/s

6 55500 Bit/s1

1.2 ModBus Transmission

Speed

The ModBus transmission speed is adjusted through parameter SY.07 in the frequency

inverter control. During initialisation this value is read out by the ModBus operator

together with the inverter address and the value is taken as ModBus bitrate.

1: No Default value of serial interfaces on Perso-

nal Computers

The KEB-ModBus operator is a slave interface. The required ModBus address for

addressing is determined by the operator parameter MDB_SlaveAddr_OP. If the value

of the operator parameter is equal to 255(decimal), the ModBus address is taken from

the inverter address (SY.06).If SY.06 shall have the value zero which was reserved for

broadcast at ModBus, the ModBus operator disable all ModBus activities. If the values

are unequal 255(decimal) the ModBus address is directly taken from this value.

1.3 Diagnosis Interface Attention !!! To prevent the damage of the serial interface on your Personal Compu-

ter be sure that you use the special HSP5 cable from KEB for connecting

your PC to the diagnosis interface of the ModBus operator.

With an adapter the HSP5 cable is connected to the diagnosis interface (see ordering

informations). When connected correctly access to all parameters of the frequency

inverter is possible using the PC-software KEB Combivis. Also the operator internal

parameters can be read out and partly adjusted or parameterized with Download.

2. Functions

2.1 Slave Addressing

The addresses of the parameters (register) are devided into different groups. Each of

this group has its own accessing method:

•0000(hex).....1FFF(hex):This group is build up by those parameters that are accessed

through the mapping list. For a possible adaption of existing applications, the real

start of the mapping parameters in this range can be adjusted by parameters

MDB_MapStartAddr_Rd/Wr ‘. (see below).

•2000(hex).....5EFF(hex): In this address area the parameters of the inverter control

board are mapped by a fixed algorithm. Access is always made on:

FI-Parameter Address = ModBus Register Address – 2000(hex). Please keep in

mind that in this address area access is done with indirect set addressing (with

FR.09).This means when writing/reading one parameter in different sets you have to

set the set indicator (FR.09) previously before access.

•5F00(hex)....5FFF(hex): This block consists of the operator parameters.

2.2 Parameter Addressing

Functions

GB - 6

The following predefined ModBus functions are supported by the KEB ModBus interface:

• 3 : ‚Read Holding Registers‘

• 4 : ‚Read Input Registers‘

• 6 : ‚Preset Single Register‘

• 16 : ‚Preset Multiple Registers‘

At KEB functions 3 and 4 are completely identical.

The predefined ModBus functions are designed for word (16 Bit) data access. Addressing

of parameters is also done by 16 bit register address.Therefore this services can only

operate to the inverter with indirect set addressing (FR.09).

As some parameters of the KEB frequency inverter have 32 bit data length, additional

definitions had to be made for accessing those parameters. This problem has been

solved in two ways:

• First is that parameter access through functions 3, 4, 6, 16 in a certain register

address area is controlled by two mapping lists. One list for reading and another for

writing.With these lists it is possible to access as well as 16 bit or 32 bit parameters

with the functions 3, 4, 16. Also the direct set addressing is supported here. The

beginning of the register addresses of the mapping lists is programmable with

parameters MDB_MapStartAddr_Rd/Wr in the operator.The real length of the mapping

list is programmable with parameters MDB_MapNr_Rd/Wr in the operator. The

maximum length is limited to 100 (dec) words (16-Bit).

• Second is that two additional ModBus functions have been defined by KEB. The

ModBus specification [2] releases function codes for so called 'user defined function

codes‘. In this function area the following functions have been created:

• 100: Read Registers32: Reading several 32 bit registers (indirect set addressing

through FR.09))

• 101:Write Registers32:Writing several 32 bit registers (indirect set addressing through

FR.09)

2.3 ModBus Functions

ModBus Reg-

Addr

Para-

Addr

Access controlled

by the mapping lists

0000h 0000h

1FFFh

2000h

5EFFh

5F00h

5FFFh 3EFFh

Parameter of the

frequency inverter

control

direct access

with Para-Addr =

Reg-Addr - 2000h

Operator Parameter

Read Mapping List

Write Mapping List

ModBus Functions

GB - 7

By this function a number of 32 bit registers/parameters can be read.

Function 100 – Request:

FUNC

100(dez)

Start-Addr

SL-Addr

HiByte LoByte

Nu ber

HiByte LoByte

CRC

LoByte HiByte

with Number: Number of registers/parameters to read

with Start-Addr: First read register address

Function 100 – Response:

FUNC

100(dez)

SL-Addr

MSByte LSByte

Byte_Cnt 1. Para eter-Wert

MSByte LSByte

n. Para eter-Wert CRC

LoByte HiByte

2.4 ModBus Functions

Defined By KEB

2.4.1 Function 100:

Read Registers32

By this function a number of 32 bit registers can be written.

Function 101 – Request:

FUNC

101(dez)

SL-Addr

HiByte

Byte_Cnt

Start-Addr

MSByte LSByte

1. Para eter-Wert CRC

LoByte HiByte

Nu ber

LoByte MSByte LSByte

n. Para eter-Wert

with Number: Number of registers/parameters to read

with Start-Addr: First read register address

Function 101 – Response:

FUNC

101(dez)

Start-Addr

SL-Addr

HiByte LoByte

Nu ber

HiByte LoByte

CRC

LoByte HiByte

2.4.2 Function 101:

Write Registers32

The ModBus operator supports fieldbus supervising.Two operator parameters configure

this function. Watchdog_Inhibit defines several events that reset the fieldbus watchdog.

Watchdog_Activation serves for activating the watchdog functions with the first

occurence of certain events.The effect of the timeout of the Watchdog timer is adjusted

via parameter Pn.05.Parameter Pn.6 determines the Watchdog time.For more information

see parameter description below and in the application manual of the used inverter

control.

2.5 FieldbusWatchdog

ModBus Functions

GB - 8

This parameters are localized in the ModBus interface and determine their behaviour.

All operator parameters can be accessed as operator parameters via ModBus (mapping

lists only for 32 bit services) as well as via diagnosis interface (HSP5).

3. Operator Parame-

ters

MDB_ProtCfg 0280h (FB.00) 5F00h

Meaning: Configures the ModBus interface protocol configuration.

Data Length: 1 Byte

Coding:

B7 B6 B5 B4 B3 B2 B1 B0

RTU

ASCII PARITY

Bit7: = 1: ModBus RTU(binary) protocol

= 0: ModBus Ascii protocol (not yet adjustable)

Bit6, 5: = 00: 8 data bits, no parity bit, 2 stop bit

= 01: 8 data bits, odd parity bit, 1 stop bit

= 10: 8 data bits, even parity bit, 1 stop bit

Bit4, 3, 2, 1, 0 = reserved for further use

Default Setting: C0h: ModBus RTU, 8 data bits, even parity bit, 1 stop bit

Remarks: A changed value will immediately be active and non-volatile saved.

MDB_SlavAddr_OP 0281h (FB.01) 5F01h

Meaning: Defines the source for the ModBus slave address.

Data Length: 1 Byte

Coding: 255(dec): ModBus slave address = SY.06. No ModBus activity if SY.06 = 0!

1...247: ModBus slave address = MDB_SlaveAddr_OP

Default Setting: 255(dec): ModBus slave address = SY.06.

Remarks: A changed value will immediately be active and non-volatile saved.

MDB_MapStartAddr_Rd 0282h (FB.02) 5F02h

Meaning: Configures the first parameter address whose read access is controlled by the read

mapping list.

Data Length: 2 Byte

Coding: 1

Default Setting: 0

Remarks: A changed value will immediately be active and non-volatile saved.

MDB_MapStartAddr_Wr 0283h (FB.03) 5F03h

Meaning: Configures the first parameter address whose write access is controlled by the write

mapping list.

Data Length: 2 Byte

Coding: 1

Default Setting: 0

Remarks: A changed value will immediately be active and non-volatile saved.

Operator Parameters

Parameter name Combivis Parameter address ModBus-Register address

Legend

GB - 9

MDB_MapNr_Rd 0284h (FB.04) 5F04h

Meaning: Configures the number of parameters in the read mapping list.

Data Length: 1 Byte

Coding: 1

Default Setting: 2

Remarks: Maximum 100 words(16 bit) can be mapped. A changed value will immediately be

active and non-volatile saved.

MDB_MapNr_Wr 0285h (FB.05) 5F05h

Meaning: Configures the real number of parameters in the write mapping list.

Data Length: 1 Byte

Coding: 1

Default Setting: 2

Remarks: Maximum 100 words(16 bit) can be mapped. A changed value will immediately be

active and non-volatile saved.

Watchdog_Inhibit 0286h (FB.06) 5F06h

Meaning: Configures which events will reset the fieldbus watchdog.

Data Length: 1 Byte

Coding: Bit coded:

Bit0 = 1: Reset fieldbus watchdog by receive of each correct ModBus telegram

Bit1 = 1: Reset fieldbus watchdog by receive of each correct ModBus telegram to this

slave (broadcast included)

Default Setting: 01h

Remarks: A changed value will immediately be active and non-volatile saved.

Watchdog_Activation 0287h (FB.07) 5F07h

Meaning: Configures which events will activate the fieldbus watchdog.

Data Length: 1 Byte

Coding: Bit coded:

Bit0 = 1: Activate fieldbus watchdog by first receive of any ModBus telegram.

Bit1 = 1: Activate fieldbus watchdog by first receive of a correct ModBus telegram to

this slave (broadcast included)

Default Setting: 01h

Remarks: A changed value will immediately be active and non-volatile saved.

MDB_Command 0288h (FB.08) 5F31h

Meaning: Through writing to this parameter certain commands can be requested in the ModBus

operator.

Data Length: 2 Byte

Coding: 0: No command

1: Set operator parameter to default values

Remarks: After completion of the requested command bit 15 of this value will be set by the

ModBus operator.

Operator Parameters

GB - 10

MDB_Mapping_Rd_N see below 5F32h+N

COMBIVIS Para. Addr.: COMBIVIS access through two parameters:

MDB_Read_MapIndex (0289h (FB.09)): = N

MDB_Read_Mapping (028Ah (FB.10)):The mapping itself

Meaning: Configures the nte mapping for read access mapping. N = 0 referes to the first mapping.

Data Length: 4 Byte

Coding:

B0 B1 B2 B3

Para-Addr

HiByte LoByte

Para-Set

Wlen

Para.Address: Parameter address (see application manual of the FI control).

Para. Set: Parameter set bit coded

Bit0 = 1 --> Set 0 addressed

Bit7 = 1 --> Set 7 addressed.

Wlen: Data length = 16 bit words

Wlen = 1 --> Data length = 16 bit

Wlen = 2 --> Data length = 32 bit: In this case the first mapping for this parameter

contains the used mapping. In the following mapping the values of Para. Addr., Para.

Set and Wlen has to be set to zero.That means that a 32 bit mapping takes two entries

in the mapping list.

Remarks: It is possible to address more than one set in one mapping.That means that the value

of Para. Set can have more then one bit set. Please keep in mind that in this case the

ModBus operator returns error code 3 (illegal value) if the values of the read parameter

are not the same in all mapped sets.

MDB_Mapping_Wr_N see below 5F96h+N

COMBIVIS Para. Addr.: COMBIVIS access through two parameters:

MDB_Write_MapIndex (028Bh (FB.11)): = N

MDB_Write_Mapping (028Ch (FB.12)):The mapping itself

Meaning: Configures the nte mapping for write access mapping. N = 0 referes to the first mapping.

Data Length: 4 Byte

Coding: Para.Addr.: Parameter address (see application manual of the FI control).

Para. Set: Parameter set bit coded

Bit0 = 1 --> Set 0 addressed

Bit7 = 1 --> Set 7 addressed.

Wlen: Data length = 16 bit words

Wlen = 1 --> Data length = 16 bit

Wlen = 2 --> Data length = 32 bit: In this case the first mapping for this parameter

contains the used mapping. In the following mapping the values of Para. Addr., Para.

Set and Wlen has to be set to zero.That means that a 32 bit mapping takes two entries

in the mapping list.

Remarks: It is possible to address more than one set in write mapping.That means that the value

of Para. Set can have more then one bit set.

OperatorType 0180h (OS.00) not available

Meaning: Returns an identifier for the operator type.

Data Length: 2 Byte

Coding: Internal KEB Coding:

10310(dec) = ModBus operator and diagnosis interface

Remarks: Only for information

Operator Parameters

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