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6-2. How to Read Special Internal Relays(R) & Special Data Registers(DT)
80
DT9230 to DT9247(P/W Link 3 status)
Address
Description
DT9230
The P/W PC Link overlapped station number(UNIT NO.) is stored here.
DT9231
The results of the trial operation in the test mode.
[used only for P Type(Optical) Link Unit]
DT9232
Counts how many times a token is lost.
DT9233
Counts how many times two or more tokens are detected.
DT9234
Counts how many times the signal is lost.
DT9235
Counts how many times a synchronous abnormality is detected.
DT9236
Send NACK
DT9237
Send NACK
DT9238
Send WACK
P/W Link 3
DT9239
Send WACK
DT9240
Send answer
DT9241
Send answer
DT9242
Unidentified command
DT9243
Counts how many times a parity error occurred.
DT9244
End code receive error
DT9245
Format error
DT9246
Not supported error
DT9247
The self-diagnosis results