Mitsubishi MELSEC-F FX3U Series User Manual

E-14
4 Programming
4.1 Loading of A/D Conversion Data
FX 3U /FX 3UC Series PLC User's Manual - Analog Control Edition
FX 3U -4AD-PT-ADP (4-channel Platinum Resistance Thermometer Data Input)
4. Programming
This chapter describes how to create programs that can read out the analog data using PT-ADP.
4.1 Loading of A/D Conversion Data
1) The input analog data will be converted into digital data and then stored in the special devices of the
FX
3U/FX3UC Series PLC.
2) If data is stored in the special devices, the number of averaging time can be set, and the input mode can
be specified.
3) The special devices, special auxiliary relays (10 points) and special data registers (10 points) are
assigned starting from the adapter nearest the main unit.
→ For a detailed description of special device assignment, refer to Section 4.2.
• The analog special adapter nearest the main unit is counted as the 1st analog special adapter, and the
next adapter as the 2nd analog special adapter, and so on. In this case, however, do not include the high-
speed input/output special adapter and the communication special adapter.
Sequence
program
Special devices
A/D
A/D
A/D
A/D
Communi-
cation
special
adapter
FX 3U -4AD
-PT-ADP
FX 3U -4AD
-PT-ADP
FX 3U -4AD
-PT-ADP
FX 3U -4AD
-PT-ADP
FX
3U /FX 3UC Series PLC
1st2nd3rd4th
High-speed
input/output
special
adapter
Special auxiliary relays:
M8280 to M8289
Special data registers:
D8280 to D8289
Special auxiliary relays:
M8270 to M8279
Special data registers:
D8270 to D8279
Special auxiliary relays:
M8260 to M8269
Special data registers:
D8260 to D8269
Special auxiliary relays:
M8290 to M8299
Special data registers:
D8290 to D8299

Mitsubishi MELSEC-F FX3U Series Specifications

General

Brand	Mitsubishi
Model	MELSEC-F FX3U Series
Category	Controller
Language	English