Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
F-19
4 Programming
4.4 Output Holding Function Cancellation Setting
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-4DA-ADP (4-channel analog Output)
A
Comm
on I
te
te
ms
B
FX
3U
-4AD
FX
3UC
-4
A
D
C
FX
3U
-4A
D
D
-A
D
P
D
FX
3G
-2A
D
D
-BD
E
FX
3U
-4DA
F
FX
3U
-4D
A
A
-AD
P
P
G
FX
3G
-1D
A
A
-BD
H
FX
3U
-3
A-
ADP
I
FX
3U
-4
A
D
-P
T
-
A
D
P
J
FX
3U
-4A
D
D
-P
TW
-
A
A
D
P
1. Program Example (For FX
3U
, FX
3UC
Series PLC)
To switch the output mode of a channel, create a sequence program as follows:
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
current output mode) when the PLC stops.
To cancel or set the output holding function, use the following special auxiliary relays:
• FX
3U
, FX
3UC
Series PLC
• FX
3G
Series PLC
1. Program Example (For FX
3U
, FX
3UC
Series PLC)
To set or cancel the output holding function for a channel, create a sequence program as follows:
Special auxiliary relay
Description
1st
2nd
3rd
4th
M8264
M8274
M8284
M8294
Cancel output holding function
setting for channel 1
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
setting for channel 2
M8266
M8276
M8286
M8296
Cancel output holding function
setting for channel 3
setting for channel 3
M8267
M8277
M8287
M8297
Cancel output holding function
setting for channel 4
setting for channel 4
Special auxiliary relay
Description
1st
2nd
M8284
M8294
Cancel output holding function
setting for channel 1
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
setting for channel 2
M8286
M8296
Cancel output holding function
setting for channel 3
setting for channel 3
M8287
M8297
Cancel output holding function
setting for channel 4
setting for channel 4
1) To switch the channel output mode of
channel 1 of the 1st analog special
adapter to the voltage output mode:
M8001
M8260
Normally OFF
2) To switch the output mode of channel 2
of the 1st analog special adapter to the
current output mode:
M8000
M8261
Normally ON
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