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469 MOTOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE TOC-2

Table of Contents

MODBUS PROTOCOL Electrical Interface...........................................................................................................................................1

Modbus RTU Protocol .....................................................................................................................................1

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

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

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

Timing ....................................................................................................................................................................4

MODBUS FUNCTIONS 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

MODBUS MEMORY

MAP

Memory Map Information.........................................................................................................................13

User-Definable Memory Map Area ....................................................................................................... 13

Event Recorder ...............................................................................................................................................15

Waveform Capture....................................................................................................................................... 15

469 Memory Map..........................................................................................................................................19

Format Codes............................................................................................................................................... 109

DEVICENET

PROTOCOL

Overview......................................................................................................................................................... 124

Poll Data.......................................................................................................................................................... 124

Change of State (COS) .............................................................................................................................. 124

DeviceNet Objects...................................................................................................................................... 125

469 Specific Objects.................................................................................................................................. 131

DeviceNet Data Formats ........................................................................................................................ 140