Changing Input Characteristics; Procedure For Changing Input Characteristics - Mitsubishi Electric MELSEC-FX3S Series Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4AD/FX -4AD (4-channel Analog Input)
3U 3UC
6.

Changing Input Characteristics

For the 4AD, the standard input characteristics are provided for each input mode (BFM#0) at the time of
factory shipment.
Changing the offset data (BFM#41 to #44) or gain data (BFM#51 to #54), however, can change the input
characteristics of each channel. This chapter describes how to change the input characteristics.
6.1

Procedure for Changing Input Characteristics

1
Determine the input mode (BFM#0)
Determine the optimum input mode (BFM#0) for the selected channels and the voltage/current
specifications.
Set value
(HEX)
0 Voltage input mode
1 Voltage input mode
Voltage input analog value direct indication
2
mode
3 Current input mode
4 Current input mode
Current input analog value direct indication
5
mode
6 Current input mode
7 Current input mode
Current input analog value direct indication
8
mode
9 to E Not used.
F Channel not used
Example: Enter "HFF00" in BFM#0 to set input mode 0 for channels 1 and 2 and prevent use channels 3 and
4.
Caution regarding data setting:
• If a channel is set to the value "2", "5", "8" or "F", the input characteristics of the channel cannot be
changed.
• Set the optimum input mode for the analog signal to be input.
PLC User's Manual - Analog Control Edition
Input mode
6 Changing Input Characteristics
6.1 Procedure for Changing Input Characteristics
Analog input range Digital output range
-10V to +10V -32000 to +32000
-10V to +10V -4000 to +4000
The offset and the gain cannot be adjusted.
4mA to 20mA
4mA to 20mA
The offset and the gain cannot be adjusted.
-20mA to +20mA -16000 to +16000
-20mA to +20mA -4000 to +4000
The offset and the gain cannot be adjusted.
-
-
0 to 16000
0 to 4000
-
G
-
B-49
A
B
C
D
E
F
H
I
J