GE MM300 Table of Contents

TABLE OF CONTENTS
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE 1
Table of Contents
COMMUNICATIONS GUIDE..................................... ....................................................................................... i
Communications interfaces......................................................................................... 1
RS485 interface (Modbus RTU)............................................................................... ......2
Modbus Protocol................................................................................................................ ...............................2
Electrical Interface..........................................................................................................................................2
Data Frame Format and Data Rate........................................................................................................2
Data Packet Format.......................................................................................................................................2
Error Checking...................................................................................................................................................3
CRC-16 Algorithm............................................................................................................................................3
Timing....................................................................................................................................................................4
MM300 supported functions......................................................................................................................4
Modbus Functions............................................................................................................... .............................4
Function Code 03H.........................................................................................................................................4
Function Code 04H.........................................................................................................................................5
Function Code 05H.........................................................................................................................................6
Function Code 06H.........................................................................................................................................7
Function Code 07H.........................................................................................................................................8
Function Code 08H.........................................................................................................................................9
Function Code 10H.........................................................................................................................................9
Error Responses..............................................................................................................................................10
Modbus memory map.............................................................................................................. ...................11
Format codes...................................................... ............................................................................................ 34
Performing Commands Using Function Code 10H..................................................... ..................49
Using the User Definable Memory Map..............................................................................................50
Ethernet interface........................................................................................ ................52
Fieldbus interface.........................................................................................................53
Profibus protocol (DP V0)..................................... ...................................................................................... 53
Profibus Output Data...................................................................................................................................53
Profibus DP-Diagnostics.............................................................................................................................54
Profibus Input Data.......................................................................................................................................54
DeviceNet protocol......................................................................................... ..............................................57
DeviceNet Communications.....................................................................................................................57
Identity Object (Class Code 01H).............................................................................................................58
Message Router (Class Code 02H).........................................................................................................58
DeviceNet Object (Class Code 03H).......................................................................................................58
DeviceNet Connection Object (Class Code 05H).............................................................................59
DeviceNet Motor Data - Poll, Explicit Object (Class Code A0H).................................................60
DeviceNet - Explicit Motor Analog Data Object, Class Code B0H, Services........................62
DeviceNet - Explicit Motor Object, Class Code B1H.......................................................................65