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4 Programming
4.4 Switching of Output Mode
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-3A-ADP (2-channel analog Input, 1-channel analog output)
A
Common Items
B
FX
3U
-4AD
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3G
-2AD-BD
E
FX
3U
-4DA
F
FX
3U
-4DA-ADP
G
FX
3G
-1DA-BD
H
FX
3U
-3A-ADP
I
FX
3U
-4AD-PT
-ADP
J
FX
3U
-4AD-PTW
-ADP
4.4 Switching of Output Mode
Turn the special auxiliary relay on/off to switch the output mode of 3A-ADP between the current output mode
and the voltage output mode.
To switch the output mode, use the following special auxiliary relays:
•FX
3U, FX3UC Series PLC
•FX
3G Series PLC
1. Program Example (For FX3U, FX3UC Series PLC)
To switch the output mode of a channel, create a sequence program as follows:
4.5 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
3U, FX3UC Series PLC
•FX
3G 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
1st 2nd 3rd 4th
M8262 M8272 M8282 M8292 Switches the output mode
OFF:Voltage output
ON :Current output
Special auxiliary relay
Description
1st 2nd
M8282 M8292 Switches the output mode
OFF:Voltage output
ON :Current output
Special auxiliary relay
Description
1st 2nd 3rd 4th
M8266 M8276 M8286 M8296
Cancel output holding
function setting
OFF: Holds the analog data output
just before stop of the PLC.
ON : Outputs the offset data at stop
of the PLC.
Special auxiliary relay
Description
1st 2nd
M8286 M8296
Cancel output holding
function setting
OFF: Holds the analog data output
just before stop of the PLC.
ON : Outputs the offset data at stop
of the PLC.
1) To switch the channel output mode of
channel 1 of the 1st analog special
adapter to the voltage output mode:
M8001
M8262
Normally OFF
1) To set the output holding function for
channel 1 of the 1st analog special adapter:
M8001
M8266
Normally OFF