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SR and AR Area Flags
Using Flags to Locate Errors
C120, C500
CPU Rack
16 pts.
32 pts.
64 pts.
16 pts.
Locating the Error
Bit No.
Word 59
Slave #0
IR 7
IR 5 & 6
IR 1, 2, 3, & 4
IR 0
IR 30 "L"
IR 30 "H"
In the System depicted above, let's assume an error has occurred in IR 31 "L" of
the Optical I/O Unit. Word 59 shows the following data.
15 14
13
12
11
O
O
1
1
O
3
Monitoring word 59 with the Programming Console reveals the following data.
Indicates a remote I/O error.
Indicates transfer I/O word 031 "L".
Slave Rack
32 pts.
IR 12 & 13
32 pts.
IR 10 & 11
16 pts.
IR 9
16 pts.
IR 8
Slave #1
IR 31 "L"
IR 31 "H"
Optical I/O Units
10
9
8
7
6
5
O
O
1
O
O
O
1
0
Section
Slave Rack
16 pts.
IR 19
16 pts.
IR 18
64 pts..
IR 14, 15, 16, & 17
4
3
2
1
0
O
1
O
O
O
8
7-2
83
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