6-2. How to Read Special Internal Relays(R) & Special Data Registers(DT)
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DT9160 to DT9169[P/W Link : Station number(UNIT NO.) & Error flags]
Notes :
•The error status of DT9161, DT9163 and DT9165 is expressed as :
Address
Description
DT9160
Station number(UNIT NO.).
P/W Link 1
DT9161
The error status.
(See Note below)
DT9162
Station number(UNIT NO.).
P/W Link 2
DT9163
The error status.
(See Note below)
DT9164
Station number(UNIT NO.).
P/W Link 3
DT9165
The error status.
(See Note below)
DT9166
to
Unused
DT9169
Bit position 15 • • 12 11 • • 8 7 • • 4 3 • • 0
Bit data
Invalid data
See list below
Bit number Descriptions
ERROR 2 LED
condition
0
Becomes “1” when a communication error occurs.
ON
1
Becomes “1” when the station numbers(UNIT NO.) are
ON
overlapped in a network.
2
Becomes “1” when the send areas are overlapped in
ON
a network.
3
Becomes “1” ;
•when the station numbers(UNIT NO.) are outside of the specified
range(01 to 32).
Flashes
•when the station numbers(UNIT NO.) in the PC Link
Mode are outside of the specified range(01 to 16).
