Mitsubishi Electric MELSEC-FX3S Series - Switching of Input Mode; Switching of Output Mode

H-21
4 Programming
4.3 Switching of Input Mode
FX 3S /FX 3G /FX 3GC /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
4.3 Switching of Input Mode
Turn the special auxiliary relay on/off to switch the input mode of 3A-ADP between the current input mode
and the voltage input mode.
To switch the input mode, 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 switch the channel input mode, create a sequence program as follows:
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
3S Series PLC
•FX
3G/FX3GC Series PLC
•FX
3U/FX3UC Series PLC
Special auxiliary
relay
Description
M8280 Switches the input mode of channel 1
OFF:Voltage input
ON :Current input
M8281 Switches the input mode of channel 2
Special auxiliary
relay
Description
1st 2nd
M8280 M8290 Switches the input mode of channel 1
OFF:Voltage input
ON :Current input
M8281 M8291 Switches the input mode of channel 2
Special auxiliary relay
Description
1st 2nd 3rd 4th
M8260 M8270 M8280 M8290 Switches the input mode of channel 1
OFF:Voltage input
ON :Current input
M8261 M8271 M8281 M8291 Switches the input mode of channel 2
Special auxiliary relay Description
M8282 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
M8262 M8272 M8282 M8292 Switches the output mode
OFF:Voltage output
ON :Current output
1) To switch the input mode of channel 1
of the 1st analog special adapter to the
voltage input mode:
M8001
M8260
Normally OFF
2) To switch the input mode of channel 2
of the 1st analog special adapter to the
current input mode:
M8000
M8261
Normally ON