GE 469

124 469 MOTOR MANAGEMENT RELAY – COMMUNICATIONS GUIDE
DEVICENET PROTOCOL COMMUNICATIONS GUIDE
DeviceNet Protocol
Overview
The device profile is an extension of the Generic Device Profile (0x00). It is a group 2 only
server. The MAC ID and baud rate are programmable through relay front panel or the
EnerVista 469 Setup software. The polling function produces 10 bytes of data (described in
assembly object Class 04h, Instance 64h, Attribute 03h). The COS\CYC operation produces
4 bytes of data as per Class 04h,Instance 66h, Attribute 03h.
The following master/slave connection objects are supported by the 469 DeviceNet
implementation:
• Explicit Messaging Connection
• Poll I/O Connection
• Change of State or Cyclic I/O Connection
The following objects have been implemented:
Poll Data
The polling data function produces 10 bytes of data as described under Class 04h,
Instance 64h, Attribute 03h.
Change of State (COS)
The COS data is described under Class 4, Instance 66h, Attribute 03h. The following data is
provided
Object Class
DeviceNet objects
Identity object 01h
Message Router object 02h
DeviceNet object 03h
Assembly object 04h
Connection object 05h
Acknowledge Handler object 2Bh
469 specific objects
I/O Data Input Mapping object A0h
Parameter Data Input Mapping object B0h
Table 9: Poll Data
Byte Name/Description Units Default, Min, Max
Format
Code
1, 2 (low, high) Relay status --- 0, 0, FFFF F162
3, 4 (low, high) Input switches and output relay status --- 0, 0, FFFF F163
5, 6 (low, high) Motor thermal capacity used % 0, 0, 100 F1
7 to 10 (low, high) Time to trip seconds -1, -1, 99999 F20