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Description of Operation
Section
3-2
91
3-2-5
Monitoring the Run Status of Function Blocks
The run status of function blocks can be monitored as follows:
When monitoring the run status common to all function blocks
The run status common to all function blocks on the Loop Control Unit can be
monitored by one of the following methods.
Check method
Running
Stopped
1. RUN LED on front panel of Loop Control
Unit
Lit
Out
2. Monitor the run status ([Execute]-[Run]-
[Monitor run status]) on CX-Process Tool
1 (ON): Hot start in
progress or cold start in
progress
1 (ON): Stopped
3. Bit 00 of the leading word (nth word) of the
25 words of the allocated CIO area of the
Special CPU Unit
1 (ON)
0 (OFF)
ITEM015 of System Common block
0 (OFF)
1 (ON)
ITEM016 of System Common block
Hot start: 1 (ON)
0 (OFF)
4.
ITEM017 of System Common block
Cold start: 1 (ON)
0 (OFF)
5. Bit 00 of the leading role +1 word in the
system information of the Data Memory for
the Node Terminals
(Data is for CX-Process Monitor.)
1 (ON)
0 (OFF)
When monitoring the run status of individual function blocks
The run status of individual function blocks can be monitored by either of the
following methods when the run status common to all function blocks on the
Loop Control Unit is "running."
Method
Running
Stopped
1. Monitor the run status ([Monitor run status]-
[Start]) on CX-Process Tool
No indication
"Stopped" indicated
2. ITEM000 of each function block
0 (OFF)
1 (ON)