Mitsubishi Electric FX3U-232-BD User Manual page 630

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
10.2.2 For FX , FX
3S
In FX , FX
3S 3G
changed over to 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".
In FX , FX , FX
3S 3G
can be checked in the operation mode display device (D8419).
1. When changing over using RUN mode and STOP mode
Set the communication format as shown below to use non-protocol communication (in accordance with RS-
232C) using RS instruction while in RUN mode and then use the programming communication while in STOP
mode.
Make sure to set the communication format used in the RS instruction to D8120, and write it before executing
the RS instruction.
X0
MOV
RS D1
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
MOV
RS D1
X0
MOV
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).
F-80
, FX , FX and FX
3G 3GC 3U
, FX , FX and FX
3GC 3U 3UC
, FX and FX
3GC 3U 3UC
H0086 D8120
P
K1 D2 K1
H0086 D8120
P
K1 D2 K1
H0000 D8120
P
10 When Combined with Another Communication
PLCs
3UC
PLCs, non-protocol communication using RS instruction can be
PLCs, the communication type operating in the communication port
10.2 When Combined with Programming Communication