Communication Setting (Initialization) In Fx Programmable Controller - Mitsubishi FX3U-USB-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Programming Communication
5. Communication Setting (Initialization) in FX
Programmable Controller
This chapter explains the communication setting method for executing programming communication using
optional communication equipment operating in accordance with RS-422, RS-232C or USB.
The setting described here is not required when the standard built-in port is used.
When using this communication function in ch1 in an FX
using the following procedure.
When using this communication function in ch2 in an FX
following procedure.
5.1 Check Procedure
1
Monitoring D8120 (D8400, D8420)
Turn ON the PLC power while it is in STOP mode, and monitor D8120 (D8400, D8420).
1. When the value of D8120 (D8400, D8420) is "0"
The communication setting is not provided.
2. When the value of D8120 (D8400, D8420) is any value other than "0"
The communication setting is provided.
2
Checking absence/presence of the parameter setting
Check absence/presence using GX Developer or FXGP/WIN.
1) GX Developer operating procedure (For details, refer to Section 5.2.)
2) FXGP/WIN operating procedure (For details, refer to Section 5.3.)
3
Checking absence/presence of sequence program setting
Check whether or not a write instruction is programmed for D8120 (D8400, D8420).
1. When such an instruction is programmed
Program example: (for D8120)
Change the program as shown below, and then change the PLC mode from STOP to RUN.
M8002
Initial pulse
M8002
Initial pulse
2. When such an instruction is not programmed
Proceed to the next step.
4
Monitor D8120 (D8400, D8420) again, and confirming that its value is "0"
FNC 12
H23F6 D8120
MOV
The value varies depending on
the communication setting.
FNC 12
H0000 D8120
MOV

5 Communication Setting (Initialization) in FX Programmable Controller

, FX or FX PLC, check D8120 and D8400
3G 3U 3UC
, FX or FX PLC, check D8420 using the
3G 3U 3UC
Program example
Changed program
5.1 Check Procedure
A
B
C
D
E
F
G
H
I
Apx.
H-33