Table Of Contents - GE 469 Communications Manual

MODBUS PROTOCOL
MODBUS FUNCTIONS
MODBUS MEMORY
MAP
DEVICENET
PROTOCOL
469 MOTOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE

Table of Contents

Electrical Interface ...........................................................................................................................................1
Modbus Rtu Protocol .....................................................................................................................................1
Data Frame Format And Data Rate.........................................................................................................2
Data Packet Format ........................................................................................................................................2
Crc-16 Algorithm.............................................................................................................................................3
Timing ....................................................................................................................................................................4
Supported Functions ......................................................................................................................................5
Read Relay Coil / Digital Input Status .....................................................................................................5
Read Setpoints And Actual Values ...........................................................................................................7
Execute Operation ...........................................................................................................................................8
Store Single Setpoint.......................................................................................................................................8
Read Device Status..........................................................................................................................................9
Loopback Test................................................................................................................................................. 10
Store Multiple Setpoints.............................................................................................................................. 10
Performing Commands .............................................................................................................................. 11
Error Responses ............................................................................................................................................. 12
Memory Map Information ......................................................................................................................... 13
User-Definable Memory Map Area ....................................................................................................... 13
Event Recorder ............................................................................................................................................... 15
Waveform Capture....................................................................................................................................... 15
469 Memory Map .......................................................................................................................................... 19
Format Codes............................................................................................................................................... 109
Overview......................................................................................................................................................... 124
Poll Data.......................................................................................................................................................... 124
Change Of State (Cos) .............................................................................................................................. 124
Devicenet Objects...................................................................................................................................... 125
469 Specific Objects.................................................................................................................................. 131
Devicenet Data Formats ........................................................................................................................ 140
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