Analog Input; Analog Input Procedures - Mitsubishi Electric FX3G User Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4AD/FX -4AD (4-channel Analog Input)
3U 3UC
4.

Analog Input

This chapter describes the minimum programming necessary to readout the 4AD analog data.
Follow the procedure below to confirm that the analog data can be properly read out.
4.1

Analog Input Procedures

1
Unit number check
Unit numbers from 0 to 7 will be assigned to the special function units/blocks starting from the left.
When units/blocks are connected to the FX
assigned. Check the unit number assigned to the 4AD.
Main unit
(FX Series
3U
PLC)
2
Input mode (BFM#0) setting
Depending on the analog signal generator to be connected, set the input mode (BFM#0) for each
channel.
Use hexadecimal numbers for input mode setting. Set the corresponding channel digit to the input
mode setting value specified in the following table:
Setting
value
0 Voltage input mode
1 Voltage input mode
Voltage input
2
Analog value direct indication mode
3 Current input mode
4 Current input mode
Current input mode
5
Analog value direct indication mode
6 Current input mode
7 Current input mode
Current input mode
8
Analog value direct indication mode
F Channel not used
→ For a detailed description of the standard input characteristics, refer to Section 2.4.
PLC User's Manual - Analog Control Edition
Unit
number: 0
Input/output
Special
extension
function block
block
H
ch4
ch3
Input mode
→ For a detailed description of the input mode (BFM#0), refer to Subsection 5.4.1.
-32MT-LT(-2) PLC, unit numbers from 1 to 7 are
3UC
Unit
number: 1
Input/output
Special
extension
function block
block
ch1
ch2
Analog input
Digital output range
range
-10V to +10V -32000 to +32000
-10V to +10V -4000 to +4000
-10V to +10V -10000 to +10000
4mA to 20mA 0 to 16000
4mA to 20mA 0 to 4000
4mA to 20mA 4000 to 20000
-20mA to +20mA -16000 to +16000
-20mA to +20mA -4000 to +4000
-20mA to +20mA -20000 to +20000
4 Analog Input
4.1 Analog Input Procedures
Unit
number: 2
Special
function unit
B-17
A
B
C
D
E
F
G
H
I
J