Mitsubishi Electric MELSEC-FX3S Series - Selection of Temperature Unit

L-21
4 Programming
4.3 Selection of Temperature Unit
FX 3S /FX 3G /FX 3GC /FX 3U /FX 3UC PLC User's Manual - Analog Control Edition
FX3U-4AD-TC-ADP (4-channel Thermocouple Data Input)
K
FX
3U
-4AD-PNK
-ADP
L
FX
3U
-4AD-TC
-ADP
M
PID Instruction (FNC 88)
4.3 Selection of Temperature Unit
The state of special auxiliary relays decides the TC-ADP's temperature unit as shown in the table below.
To switch the temperature unit, 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)
Special auxiliary relay Description
M8280
Selection of temperature unit:
OFF: Centigrade (
°
C)
ON: Fahrenheit (
°
F)
Special auxiliary relay
Description
1st 2nd
M8280 M8290
Selection of temperature unit:
OFF: Centigrade (
°
C)
ON: Fahrenheit (
°
F)
Special auxiliary relay
Description
1st 2nd 3rd 4th
M8260 M8270 M8280 M8290
Selection of temperature unit:
OFF: Centigrade (
°
C)
ON: Fahrenheit (
°
F)
1)To switch the temperature unit to
centigrade (C) for the 1st adapter:
M8001
M8260
Normally OFF
2) To switch the temperature unit to
Fahrenheit (F) for the 2nd adapter:
M8000
M8270
Normally ON