Mitsubishi Electric MELSEC-FX3S Series - Programming; Loading of A;D Conversion Data

J-17
4 Programming
4.1 Loading of A/D Conversion Data
FX 3S /FX 3G /FX 3GC /FX 3U /FX 3UC PLC User's Manual - Analog Control Edition
FX 3U -4AD-PTW-ADP (4-channel Platinum Resistance Thermometer Data Input)
A
Common Items
B
FX
3U
-4AD
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3G
-2AD-BD
E
FX
3U
-4DA
F
FX
3U
-4DA-ADP
G
FX
3G
-1DA-BD
H
FX
3U
-3A-ADP
I
FX
3U
-4AD-PT
-ADP
J
FX
3U
-4AD-PTW
-ADP
4. Programming
This chapter describes how to create programs that can read analog data using the PTW-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
3S/FX3G/FX3GC/FX3U/FX3UC Series PLC.
2) If data is stored in the special devices, the averaging time can be set, and the input mode can be
specified.
3) Special auxiliary relays (10 points) and special data registers (10 points) are assigned automatically
starting from the adapter nearest to the main unit.
→ For a detailed description of special device assignment, refer to Section 4.2.
•FX
3S Series PLC
•FX
3G/FX3GC Series PLC
The analog special adapter nearest to the main unit is counted as the 1st analog special adapter, and the
next adapter as the 2nd analog special adapter. However, in this case, do not include the connector
conversion adapter and the communication special adapter.
*1. The second special adapter is not available in the FX
3G Series PLC (14-point and 24-point type).
*2. A connector conversion adapter is required to connect the FX
3U-4AD-PTW-ADP to the FX3G Series
PLC.
Sequence
program
Special devices
A/D
Communi-
cation
special
adapter
FX3U-4AD
-PTW-ADP
FX3S-CNV
-ADP
Special auxiliary relays:
M8280 to M8289
Special data registers:
D8280 to D8289
FX3S Series PLC
2nd
*1 1st
Communi-
cation
special
adapter
FX
3U -4AD
-PTW-ADP
FX 3U -4AD
-PTW-ADP
Sequence
Program
FX
3G /FX 3GC Series PLC
*2
Special devices
Special auxiliary relays:
M8280 to M8289
Special data registers:
D8280 to D8289
Special auxiliary relays:
M8290 to M8299
Special data registers:
D8290 to D8299
A/D
A/D