Communication Setting In Fx Programmable Controller - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Computer Link
5.

Communication Setting in FX Programmable Controller

This chapter explains the communication setting method types and setting methods for computer link.
5.1 Communication Setting Methods
This section explains the communication setting methods and setting procedures in FX PLCs.
1. Setting method types
1) Specifying the setting using parameters in the sequence programming software:
Register the setting as parameters by executing communication setting on the personal computer screen
using the sequence programming software, and transfer them to a PLC.
(This method using parameters is not available for FX
2) Specifying the setting by writing data to special data registers:
Create a sequence program specifying the communication format, station number settings and time-out
time setting, and then transfer the sequence program to a PLC.
Caution
A PLC operates in the same way regardless of the selected method shown above. If both methods are
selected, priority is given to the method using parameters.
2. Communication setting method applicability for each FX Series
FX Series
FX , FX , FX
1S 1N
FX , FX (ch1), FX
3S 3G
FX (ch1), FX
3U 3UC
FX (ch2), FX
3G 3GC
FX (ch2), FX
3U 3UC
FX (FX), FX , FX
2 2C
3. Setting data flow
Setting window
Sequence
program for
set values
D-40
Specification using parameters
, FX , FX ,
1N 2N 2NC
(ch1),
3GC
(ch1)
(ch2),
(ch2)
0N
For the detailed contents of special data registers, refer to Section 9.2.
Setting data write method to special data registers, refer to Section 9.3.
Parameter area
Parameter
method
Program
method
5 Communication Setting in FX Programmable Controller
(FX), FX
2
 (Recommended)

—
PLC memory
Transferred
when power
is turned ON
Program area
Written by
[MOV H D8120]
program
[MOV H D8121]
[MOV K D8129]
When both methods are used at the same time,
priority is given to the contents set in the parameter
method.
5.1 Communication Setting Methods
, or FX PLCs.)
2C 0N
Specification using special data registers

—

ch1: Computer link
D8120
Communication format
D8121
Station number settings
D8129
Time-out time setting
In FX , FX , FX
3G 3GC
ch2: Computer link
D8420
Communication format
D8421
Station number settings
D8429
Time-out time setting
and FX
3U 3UC