GE MM200 User Manuals

Table of Contents

• 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
• MM200 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

  7
• Function Code 08H

  8
• Function Code 10H

  9
• Performing Commands Using Function Code 10H

  10
• Using the User Definable Memory Map

  10
• Error Responses

  11
• Modbus memory map

  11
• Format codes

  20
• Profibus protocol (DP V0)

  28
• Profibus Output Data

  8
• Profibus DP-Diagnostics

  28
• Profibus Input Data

  29
• DeviceNet protocol

  32
• DeviceNet Communications

  32
• Identity Object (Class Code 01H)

  33
• Message Router (Class Code 02H)

  33
• DeviceNet Object (Class Code 03H)

  33
• DeviceNet Connection Object (Class Code 05H)

  34
• I/O Data Polled Object (Class Code 64H)

  35
• DeviceNet Motor Data - Poll, Explicit Object (Class Code A0H)

  36
• DeviceNet - Explicit Motor Analog Data Object, Class Code B0H, Services

  37
• DeviceNet - Explicit Motor Object, Class Code B1H

  39