Mitsubishi FX3U-232-BD User Manual page 503

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
10.2 When Combined with Programming Communication
In FX (Ver. 2.01 or later), FX
2N
RS-232C using RS instruction can be changed over to the programming communication for peripheral
equipment.
10.2.1 For FX and FX
2N
In FX (Ver. 2.01 or later) and FX
2N
232C port in the FX
the communication with a programming tool (programming communication) by the following methods.
If the external equipment executes another type of communication while the programming communication is
selected, the PLC sends back "NAK".
1. When changing over using RUN mode and STOP mode
Set the communication format to one of the settings shown below to use non-protocol communication (in
accordance with RS-232C) using the RS instruction while in RUN mode and then use the programming
communication while in STOP mode.
Item
Data length
Parity bit
Stop bit
Baud rate (bps)
Header
Terminator
Control line
2. When changing over using the RS instruction while in RUN mode
When changing over non-protocol communication using RS instruction to the programming communication
while in RUN mode, set RS instruction to OFF, and then overwrite the communication format (D8120) to
"H0000".
Before starting up RS instruction again, make sure to properly overwrite the communication format (D8120)
used in the RS instruction.
X0
RS
X0
In this setting also, the communication mode can be changed over using RUN mode and STOP mode if the
condition shown in 1 above is satisfied.
3. Caution on using the RS instruction and programming communication together
Do not use the communication setting by parameters. Use the communication format device (D8120).
, FX , and FX
3U 2NC
PLCs
2NC
PLCs, non-protocol communication using RS instruction by way of RS-
2NC
-232-BD (for FX PLCs), FX
2N 2N
Contents
H0086 H0186
7-bit
Even
1-bit
9600 bps
Not provided Provided
Not provided
Not provided
MOV P H0086 D8120
D1 K1 D2 K1
MOV H0000 D8120
P
10 When Combined with Another Communication
10.2 When Combined with Programming Communication
PLCs, non-protocol communication in accordance with
3UC
-232ADP, or FX -232ADP can be changed over to
0N 2NC
H0286 H0386
Not provided Provided
Provided
A
B
C
D
E
F
G
H
I
Apx.
F-65