
Ladder Logic Elements and Instructions
870USE10110 July 2004 365
5 Displays the PLC's stop state conditions:
6 Displays the number of segments in ladder logic; a binary number is shown:
7 Displays the address of the end-of-logic (EOL) pointer:
8 Not Used
9 Not Used
10 Uses its two least significant bits to display RUN/LOAD/DEBUG status:
11 Not used.
Words Description
1234567 10 11 12 13 14 15 1689
Real Time Clock Error
Watchdog Timer Expired
Bad number of I/O modules on I/OBus or End of Logic Nodes
State RAM Test Failed
Bad Config
Coil Disabled in RUN Mode
Logic checksum
Invalid Node
Start of Node Did Not Start Segment
Segment Scheduler Invalid
Illegal Peripheral Intervention
Controller in DIM AWARENESS
Error in the I/O Map
Peripheral Port Stop
CPU Logic Solver Failed (for chassis mount
controllers) or Coil Use Table (for other controllers)
If the bit = 1 in a chassis mount controller, the internal
diagnostics have detected a CPU failure. If the bit = 1
in any controller other than a chassis mount, then the
Coil Use table does not match the coils in user logic.
If the bit is set to 1, then the condition is TRUE.
16151413121110987654321
Number of Segments (expressed as a binary number)
16151413121110987654321
EOL Pointer Address
0
1
0
16151413121110987654321
If the bit is set to 1, then the condition is TRUE.
Debug = 0
Run = 0
Load = 1
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