B-63983EN/01 2.PMC SPECIFICATIONS
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Ladder execution start signal
Ladder stop signal
Ladder execution status signal
Using the ladder execution start and stop signals in a ladder program
can detect when the ladder program starts and stops.
Referencing the ladder execution status signal from an external system
or program, such as the network board, C Language executor program,
FOCAS2 Ethernet, or HSSB library, can detect the execution status of
the ladder program.
R9015.0: "Ladder execution start
signal" (can be referenced
only from the ladder
program)
R9015
7654 321 0
R9015.1: "Ladder stop signal" (can be
referenced only from the
ladder program)
R9091
76 5 4 32 1 0
R9091.2: "1st Ladder execution
status signal"
0: Ladder at a stop
1: Ladder being executed
R9091.3: "2nd Ladder execution
status signal"
0: Ladder at a stop
1: Ladder being executed
R9091.4: "3rd Ladder execution
status signal"
0: Ladder at a stop
1: Ladder being executed
Signal operation
Execution
Stop
Ladder execution status
"Ladder execution star
signal"
"Ladder stop signal"
"Ladder execution status
signal"
One ladder
scan cycle
One ladder
scan cycle