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6.11 Monitor Function
6.11.3 Enforced ON/OFF of external I/O
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FUNCTIONS
The operations when enforced ON/OFF is performed are shown in Diagram 6.37.
POINT
1. A GX Developer Version 6 or higher is required to use this function.
2. When system switching occurs in the redundant system, the new control
system continues enforced ON/OFF with the ON/OFF data registered to the
old control system.
Diagram 6.37 Operation performed at enforced ON/OFF
M0
X0
Y10
Y10
Y11
M1
END
Y10 device
enforced OFF
X0 device
enforced OFF
Y10 output
(OFF)
X0 input
(ON)
External input
forcibly set at OFF
Set at ON on the rudder even during
enforced OFF (external output set at OFF)
External output
(Y10 OFF)
External input
(X0 ON)
Output enforced ON/OFF operations
Input enforced ON/OFF operations
Output refreshed
Input refreshed
Sequence execution
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