Temperature Measurement - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4AD-PNK-ADP (4-channel Resistance Thermometer Data Input)
3U
2.4.3 When connected to a FX
1. A/D conversion and special data register update timing
A/D conversion is performed at every arithmetic operation of the PLC.
During execution of END instruction, the PLC performs A/D conversion, reads out the A/D converted data,
and then writes the data in the special data registers.
FX -4AD-PNK-ADP
3U
n'th
A/D
conversion
200 μs/4ch
2. A/D conversion during PLC stop
Even if the PLC is stopped, A/D conversion will be performed and the special data registers will be updated.
3. If two or more analog special adapters are connected
During execution of the END instruction, data will be read out from all the connected adapters (in the order of
1st adapter → 2nd adapter...4th adapter).
4. A/D conversion speed (data update time)
During execution of the END instruction, the A/D converted data of all 4 channels will be read out in 200 μs,
and the data read out will be written to the special data registers.
END instruction execution time will be "200 μs × number of connected adapters."
2.5

Temperature Measurement

To stabilize the temperature measurement, warm-up the system for 30 minutes or more after power-on.
PLC User's Manual - Analog Control Edition
/FX PLC
3U 3UC
FX -4AD-PNK-ADP
3U
1st
A/D
conversion
200 μs/4ch
FX /FX
3U
Sequence
program
A/D conversion start
command
Digital value reading
END instruction
A/D conversion start
command
Digital value reading
2 Specifications
2.5 Temperature Measurement
Series PLC
3UC
K-11
K
L
M