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L-20
4 Programming
4.4 Selection of Type K or J
FX
3G
/FX
3U
/FX
3UC
PLC User's Manual - Analog Control Edition
FX3U-4AD-TC-ADP (4-channel Thermocouple Data Input)
4.4 Selection of Type K or J
Turn on the J type or off the K type selection special auxiliary relay to select the thermocouple type J or K for
TC-ADP.
The thermocouple type will be selected for all the channels at the same time.
To select the thermocouple type, use the following special auxiliary relays:
•FX
3U, FX3UC Series PLC
•FX
3G Series PLC
1. Program Example (For FX3U, FX3UC Series PLC)
Special auxiliary relay
Description
1st 2nd 3rd 4th
M8261 M8271 M8281 M8291
Selection of type K or J:
OFF: Type K
ON: Type J
Special auxiliary relay
Description
1st 2nd
M8281 M8291
Selection of type K or J:
OFF: Type K
ON: Type J
2)To select thermocouple type J for the
2nd adapter :
M8000
M8271
Normally ON
1) To select thermocouple type K for the
1st adapter:
M8001
M8261
Normally OFF