Mitsubishi Electronics MELSEC-F Manuel D’Utilisation
C-18
4 Programming
4.3 Switching of Input Mode
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX
3U
-4AD-ADP (4-channel analog Input)
• FX
3G
Series PLC
R: Read / W: Write
4.3
Switching of Input Mode
Turn the special auxiliary relay on/off to switch the input mode of 4AD-ADP between the current input mode
and the voltage input mode.
To switch the input mode, use the following special auxiliary relays:
• FX
and the voltage input mode.
To switch the input mode, 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 switch the channel input mode, create a sequence program as follows:
Special device
Device number
Description
Attribute Reference
1st
2nd
Special auxiliary relay
M8280
M8290
Switches the input mode of channel 1
R/W
Section 4.3
M8281
M8291
Switches the input mode of channel 2
R/W
M8282
M8292
Switches the input mode of channel 3
R/W
M8283
M8293
Switches the input mode of channel 4
R/W
M8284 to
M8289
M8294 to
M8299
Unused (Do not use.)
-
-
Special data register
D8280
D8290
Channel-1 input data
R
Section 4.4
D8281
D8291
Channel-2 input data
R
D8282
D8292
Channel-3 input data
R
D8283
D8293
Channel-4 input data
R
D8284
D8294
Averaging time for channel-1 (Setting
range: 1 to 4095)
range: 1 to 4095)
R/W
Section 4.5
D8285
D8295
Averaging time for channel-2 (Setting
range: 1 to 4095)
range: 1 to 4095)
R/W
D8286
D8296
Averaging time for channel-3 (Setting
range: 1 to 4095)
range: 1 to 4095)
R/W
D8287
D8297
Averaging time for channel-4 (Setting
range: 1 to 4095)
range: 1 to 4095)
R/W
D8288
D8298
Error status
R/W
Section 4.6
D8289
D8299
Model code = 1
R
Section 4.7
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
ON: Current input
M8261
M8271
M8281
M8291
Switches the input mode of channel 2
M8262
M8272
M8282
M8292
Switches the input mode of channel 3
M8263
M8273
M8283
M8293
Switches the input mode of channel 4
Special auxiliary relay
Description
1st
2nd
M8280
M8290
Switches the input mode of channel 1
OFF: Voltage input
ON: Current input
ON: Current input
M8281
M8291
Switches the input mode of channel 2
M8282
M8292
Switches the input mode of channel 3
M8283
M8293
Switches the input mode of channel 4
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