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

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
5.

Communication Setting in FX Programmable Controller

This chapter explains the communication setting types and setting methods for non-protocol communication
using RS/RS2 instruction.
5.1 Communication Setting Method Mechanism
This section explains the communication setting method types and setting procedures in FX PLCs.
1. Setting method types
1) Specifying the setting using parameters:
Set the parameters by adjusting communication settings on the personal computer screen using the
sequence programming software, and transfer them to a PLC.
(This method using parameters is not available in FX
(This method using parameters is not available for ch0 in FX
2) Specifying the settings by writing data to special data registers:
Prepare a sequence program which sets the communication format and time-out time setting, and then
transfer the program to the PLC.
Caution
A PLC operates in the same way without regard to a selected method shown above. If both methods are
selected, priority is given to the method using parameters.
2. Communication setting method applicability in each FX Series
FX , FX , FX
1S 1N
FX (ch1, ch2), FX
3G
FX (FX), FX , FX
2 2C
3. Setting data flow
Setting window
Parameter
method
Sequence
Program
program for
method
set values
F-40
FX Series
, FX , FX , FX ,
1NC 2N 2NC 3S
(ch1, ch2), FX , FX
3GC 3U
, FX (ch0), FX (ch0)
0N 3G 3GC
PLC memory
Parameter area
Program area
[MOV H D8120]
[MOV K D8129]
In FX FX FX
3S, 3G, 3GC,
FX and FX
3U 3UC
[MOV H D8370]
[MOV K D8379]
[MOV H D8400]
[MOV K D8409]
[MOV H D8420]
[MOV K D8429]
5 Communication Setting in FX Programmable Controller
(FX), FX
2 2C
, FX
3G
Specification using
parameters
 (Recommended)
3UC
—
Transferred
when power
is turned ON
RS instruction
D8120 Communication format
D8129 Time-out time setting
In FX
3S,
Written by
FX
3U
program
ch0 RS2 instruction
D8370 Communication format
D8379 Time-out time setting
Written by
ch1 RS2 instruction
program
D8400 Communication format
D8409 Time-out time setting
Written by
program
ch2 RS2 instruction
D8420 Communication format
D8429 Time-out time setting
Written by
program
When both methods are selected at the same time, priority is
given to the contents set in the parameter method.
5.1 Communication Setting Method Mechanism
and FX PLCs.)
0N
PLCs.)
3GC
Specification by writing settings
data to special data registers


FX FX
3G, 3GC,
and FX
3UC
Ch0 is available only
in the FX
The setting method
using parameters cannot
be used for ch0.
Only ch1 is available in
the FX
3S
, FX PLC.
3G 3GC
PLC.