Electrical Interface ...................................................................................................................................... 2-1

Data Frame Format and Data Rate.................................................................................................... 2-2

Data Packet Format ................................................................................................................................... 2-2

Error Checking .............................................................................................................................................. 2-2

CRC-16 Algorithm........................................................................................................................................ 2-3

Timing ............................................................................................................................................................... 2-3

MM300 supported functions.................................................................................................................. 2-4

Modbus Functions ..............................................................................................................................2-4

Function Code 03H ..................................................................................................................................... 2-4

Function Code 04H ..................................................................................................................................... 2-5

Function Code 05H ..................................................................................................................................... 2-5

Function Code 06H ..................................................................................................................................... 2-6

Function Code 07H ..................................................................................................................................... 2-7

Function Code 08H ..................................................................................................................................... 2-8

Function Code 10H ..................................................................................................................................... 2-8

Error Responses ........................................................................................................................................... 2-9

Modbus memory map ................................................................................................................... 2-10

Format codes..................................................................................................................................... 2-39

Performing Commands Using Function Code 10H.......................................................... 2-66

Using the User Definable Memory Map..........................................................................................2-66

Configurable Fieldbus input data ................................................................................................4-1

Profibus DP.............................................................................................................................................4-3

Profibus power supply configuration................................................................................................. 4-4

Profibus termination .................................................................................................................................. 4-5

Profibus DP-parameterization............................................................................................................... 4-5

Profibus DP-configuration....................................................................................................................... 4-6

Profibus Input Data .................................................................................................................................... 4-8

Profibus Output Data...............................................................................................................................4-10

Profibus DPV0-Diagnostics ...................................................................................................................4-10

Profibus DPV1 .................................................................................................................................... 4-21

Profibus DPV1-Acyclic read/write data...........................................................................................4-21

Extended Profibus DPV1 functionality.............................................................................................4-24

Acyclic Read Operation (Modbus functions 03H and 04H) ................................................... 4-24

Parameter Acyclic Write Operation (Modbus function 10H)................................................. 4-25

Execute Operation Command (Modbus function 05H) ........................................................... 4-27

Preset Single Register (store single setpoint - Modbus function 06H)............................. 4-28

Profibus DPV1-Diagnostics ...................................................................................................................4-28

I&M (Identification & Maintenance) records..................................................................................4-39

DeviceNet protocol.......................................................................................................................... 4-41

DeviceNet power supply configuration ..........................................................................................4-42

DeviceNet setup and configuration (typical) ................................................................................4-43

TOC-I

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Table Of Contents - GE MM300 Manual