GE Motor Protection System, LM10 instruction manual Sent by scanner CANID, MACID, 0x0E, 0x64, 0x01

Models: LM10 Motor Protection System

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•Sent by scanner: CANID, MACID, 0x0E, 0x64, 0x01, 0x34

DEVICENET OPERATIONS

CHAPTER 5: COMMUNICATIONS

This data was initially setup for development purposes. An explicit message through the custom class 100(0x64) is the only way to access this data. The DeviceNet message to read this data is: service 0x0e, class 0x64, instance 1, and attribute 0x34. The response will be a 16-bit word with MACID switches in the high byte and AC switch input bits in the low byte.

Sent by scanner: CANID, MACID, 0x0E, 0x64, 0x01, 0x34

Response from the LM10: CANID, MACID, 0x8E, LBY, HBY

The format of this data follows F25: Input Switch Status. The high byte (HBY) is not used in this application. The low byte (LBY) is the input data we are looking for. The seven hard wired inputs map to bits 0 to 6 as DeviceNet Control, AxSn2, AxSn1, RUN2, RUN1, Reset, Stop. To watch for RUN1 one would test for bit 2 being on. EX: LBY and 0x04 is not equal to 0x00.

Do not switch out of DeviceNet Control while the motor is running. In such a case the LM10 will issue a Stop command under the assumption that the network is down.

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LM10 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL

Page 68
Image 68
GE Motor Protection System, LM10 instruction manual Sent by scanner CANID, MACID, 0x0E, 0x64, 0x01