8 FUNCTIONS
8.2 Output HOLD/CLEAR Setting Function
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8.2 Output HOLD/CLEAR Setting Function
When the I/O module is disconnected from data link, or the CPU module operating status is STOP, whether to hold or clear
the last output value can be set by this function.
Output HOLD/CLEAR setting and its operation
When HOLD or CLEAR is set for an output, the output is turned on or off as follows.
If a moderate or major error has occurred in the I/O module, output turns off regardless of the output HOLD/CLEAR setting.
Setting method
1. Set HOLD or CLEAR using the function setting switch 4 of I/O module.
The setting status of output HOLD/CLEAR setting can be checked by bit3 of detailed module information (upper).
For details, refer to the following.
Page 129 Detailed module information (upper)
Operating status Output HOLD/CLEAR setting
HOLD
Output HOLD/CLEAR setting
CLEAR
Last output status
OFF
Last output status
ON
Last output status
OFF
Last output status
ON
Data link in operation CPU module in RUN OFF ON OFF ON
CPU module in STOP OFF ON OFF OFF
CPU module in PAUSE OFF ON OFF ON
CPU module in RESET OFF ON OFF OFF
CPU module suspended by
error
OFF ON OFF OFF
During disconnection/cyclic stop OFF ON OFF OFF
Function setting switch 4 Output HOLD/CLEAR setting
OFF CLEAR (default)
ON HOLD
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