Mitsubishi MELSEC-F FX3U Series User Manual

F-21
4 Programming
4.8 Model Code
FX 3U /FX 3UC Series PLC User's Manual - Analog Control Edition
FX3U-4AD-TC-ADP (4-channel Thermocouple Data Input)
A
Common Items
B
FX
3UC
-4AD
C
FX
3U
-4AD-ADP
D
FX
3U
-4DA-ADP
E
FX
3U
-4AD-PT
-ADP
F
FX
3U
-4AD-TC
-ADP
G
PID Instruction (FNC 88)
4.8 Model Code
Initial value: K10
Numeric data type: Decimal (K)
When TC-ADP is connected, model code "10" will be stored in the special data register.
The following table shows the special data registers that store the model code:
Use the above special data registers to check whether TC-ADP is connected or not.
1. Example of program
4.9 Example of Basic Program
Create an example of basic program to read out the temperature measurement data.
The following program will select thermocouple type K and will store the temperature measurement data (
°
C
)
of channels 1 and 2 of the 1st adapter in the D100 and the D101, respectively. The number of averaging time
will be set to "32" for channel 1, and "128" for channel 2.
Even if the temperature measurement data is not stored to D100 or D101, data registers D8260 or D8261 can
be directly used in the arithmetic operation instruction or PID instruction.
Special data register
Description
1st 2nd 3rd 4th
D8269 D8279 D8289 D8299 Model code
FNC224
LD =
D8269 K10
Checks the model code of the 1st
analog special adapter.
Y010
M8002
M8001
M8260
Sets the temperature unit to
centigrade (
° C)
M8002
FNC 12
MOV
K32 D8264
FNC 12
MOV
K128 D8265
Sets the number of averaging time
to "32" for channel-1 data
Sets the number of averaging time
to "128" for channel-2 data
M8261
Selects thermocouple type K
RST D8268.6
RST D8268.7
Error status of 1st analog special
adapter
b6 = OFF (hardware error)
Error status of 1st analog special
adapter
b7 = OFF (communication data error)
M8000
FNC 12
MOV
D8260 D100
FNC 12
MOV
D8261 D101
Stores the current value of the
channel-1 measurement
temperature data to D100.
Stores the current value of the
channel-2 measurement
temperature data to D101.

Mitsubishi MELSEC-F FX3U Series Specifications

General

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