Analog Output; Analog Output Procedures - Mitsubishi Electric MELSEC-FX3S Series Manual

FX /FX /FX /FX /FX
3S 3G 3GC 3U 3UC
FX -4DA (4-channel Analog Output)
3U
4.

Analog Output

This chapter describes the minimum programming necessary for analog output by the FX
Follow the procedure below to confirm that correct analog values can be output.
4.1

Analog Output 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 the units/blocks are connected to the FX
are assigned. Check the unit number assigned to the FX
Main unit
(FX Series
3U
PLC)
2
Output mode (BFM#0) setting
Depending on the analog signal generator to be connected, set the output mode (BFM#0) for each
channel.
Use hexadecimal numbers for output mode setting. Set the corresponding channel digit to the
output mode setting value specified in the following table:
Setting
value
0 Voltage output mode
Voltage output
1
analog value mV specification mode
2 Current output mode
3 Current output mode
Current output
4
analog value μA specification mode
F Channel not used
→ For a detailed description of the standard output 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
Output mode
→ For a detailed description of the output mode (BFM#0), refer to Subsection 5.4.1.
-32MT-LT(-2) PLC, the unit numbers from 1 to 7
3UC
-4DA.
3U
Unit
number: 1
Input/output
Special
extension
function block
block
ch1
ch2
Analog output range Digital input range
-10 V to +10 V -32000 to +32000
-10 V to +10 V -10000 to +10000
0 mA to 20 mA
4 mA to 20 mA
0 mA to 20 mA
4 Analog Output
4.1 Analog Output Procedures
-4DA.
3U
Unit
number: 2
Special
function unit
0 to 32000
0 to 32000
0 to 20000
E-13
A
B
C
D
E
F
G
H
I
J