F-22
4 Programming
4.4 Output Holding Function Cancellation Setting
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3U-4DA-ADP (4-channel Analog Output)
4.4 Output Holding Function Cancellation Setting
This setting can hold the analog data output or to output the offset data (0V for voltage output mode, 4mA for
current output mode) when the PLC stops.
To cancel or set the output holding function, use the following special auxiliary relays:
•FX
3S Series PLC
•FX
3G/FX3GC Series PLC
•FX
3U/FX3UC Series PLC
1. Program Example (For FX3U/FX3UC Series PLC)
To set or cancel the output holding function for a channel, create a sequence program as follows:
Special auxiliary
relay
Description
M8284
Cancel output holding function
setting for channel 1
OFF: Holds the analog data output just before stop of the
PLC.
ON : Outputs the offset data at stop of the PLC.
M8285
Cancel output holding function
setting for channel 2
M8286
Cancel output holding function
setting for channel 3
M8287
Cancel output holding function
setting for channel 4
Special auxiliary
relay
Description
1st 2nd
M8284 M8294
Cancel output holding function
setting for channel 1
OFF: Holds the analog data output just before stop of the
PLC.
ON : Outputs the offset data at stop of the PLC.
M8285 M8295
Cancel output holding function
setting for channel 2
M8286 M8296
Cancel output holding function
setting for channel 3
M8287 M8297
Cancel output holding function
setting for channel 4
Special auxiliary relay
Description
1st 2nd 3rd 4th
M8264 M8274 M8284 M8294
Cancel output holding function
setting for channel 1
OFF: Holds the analog data output
just before stop of the PLC.
ON : Outputs the offset data at
stop of the PLC.
M8265 M8275 M8285 M8295
Cancel output holding function
setting for channel 2
M8266 M8276 M8286 M8296
Cancel output holding function
setting for channel 3
M8267 M8277 M8287 M8297
Cancel output holding function
setting for channel 4
1) To set the output holding function for
channel 1 of the 1st analog special adapter:
M8001
M8264
Normally OFF
2) To cancel the output holding function for
channel 2 of the 1st analog special adapter:
M8000
M8265
Normally ON
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