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Status Area and Troubleshooting
Section 9-2
Polling Node Address, Startup Node Address: IR 191
Network Participation Status: IR 192 and IR 193
Local Data Link Participation Status: IR 90
Note Data link status is valid only when the local node is participating in the data
link. Confirm that the Local Data Link Active Bit is ON before referencing the
data link status.
Data Link Status: IR 91 to
IR 93
When the first data link status word is not set or is set to the default (0000) for
either the manually set data link tables or automatically set data link tables,
the data link status is stored in the following words for nodes 1 to 6 only.
Polling node address
Startup node address
Each node address is displayed in 2-digit BCD.
The numbers in the squares indicate node addresses.
The corresponding node participation status is as follows:
0: Not part of the network
1: Part of the network
IR 192
IR 193
1: Local node data link participating
0: Local node data link not participating or data link
inactive
Node 2
Node 4
Node 6
Node 1
Node 3
Node 5
IR 91
IR 92
IR 93
PC status
0: Inactive (user program not running)
1: Active (user program running)
Communications error (data link reception)
0: Normal
1: Error
PC's CPU Unit error
0: Normal
1: Error
Data link participation
0: Not in data link or data link inactive
1: In data link
Offset error
0: Normal
1: Error
Error: Offset exceeds
number of send words.
Insufficient (short) receive area
0: Sufficient
1: Insufficient
Insufficient: Receive
area is smaller than
send area. Excess data
is truncated; other data
is received.
Remaining receive area
0: Not remaining
1: Remaining
Remaining: Receive
area is larger than send
area. Data is received
and remaining words
are cleared.
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