GE 489 - Manual (Page 132)

4-82 489 Generator Management Relay GE Multilin
4.13 S12 TESTING 4 SETPOINTS
4
4.13.6 COMM PORT MONITOR
PATH: SETPOINTS ÖØ S12 TESTING ÖØ COMM PORT MONITOR
During communications troubleshooting, it can be useful to see the data being transmitted to the 489 from some master
device, as well as the data transmitted back to that master device. The messages shown here make it possible to view that
data. Any of the three communications ports may be monitored. After the communications buffers are cleared, any data
received from the monitored communications port is stored in Rx1 and Rx2. If the 489 transmits a message, it appears in
the Tx1 and Tx2 buffers. In addition to these buffers, there is a message indicating the status of the last received message.
4.13.7 FACTORY SERVICE
PATH: SETPOINTS ÖØ S12 TESTING ÖØ FACTORY SERVICE
This section is for use by GE Multilin personnel for testing and calibration purposes.
„ COMM PORT MONITOR
„ [ENTER] for more
MONITOR COMM. PORT:
Computer RS485
Range: Computer RS485, Auxiliary RS485,
Front Panel RS232
CLEAR COMM.
BUFFERS: No
Range: No, Yes
LAST Rx BUFFER:
Received OK
Range: Buffer Cleared, Received OK, Wrong Slave
Addr., Illegal Function, Illegal Count, Illegal Reg.
Addr., CRC Error, Illegal Data
Rx1: 02,03,00,67,00,
03,B4,27
Range: received data in HEX
Rx2:
Range: received data in HEX
Tx1: 02,03,06,00,64,
00,0A,00,0F
Range: received data in HEX
Tx2:
Range: received data in HEX
„ FACTORY SERVICE
„ [ENTER] for more
ENTER FACTORY
PASSCODE: 0
Range: N/A
ENTER
ESCAPE
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MESSAGE
ESCAPE
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MESSAGE
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ESCAPE
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ESCAPE
ENTER
ESCAPE
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