Mitsubishi FX3U-232-BD User Manual page 507

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (RS/RS2 Instruction)
10.5 Using RS2 Instruction and Computer Link Communication Together
(FX and FX
3U
In FX and FX
3U 3UC
instruction can be changed over to computer link by the following methods.
In FX and FX
3U 3UC
operation mode display devices (D8419 and D8439).
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 RS2 instruction while in RUN mode and then use a protocol for computer link while in STOP mode.
Set computer link using parameters.
Make sure to set the communication format used in the RS2 instruction to D8400 or D8420, and write it
before executing the RS2 instruction.
X0
Command
RS2 D1 K1 D2 K1 K1
Non-protocol communication (in accordance with RS-485) cannot be changed over to computer link using
RUN mode and STOP mode.
When changing over non-protocol communication (in accordance with RS-485) to computer link, refer to
"2. When changing over using the RS2 instruction while in RUN mode" below.
2. When changing over using the RS2 instruction while in RUN mode
When changing over non-protocol communication using the RS2 instruction to computer link while in RUN
mode, set the RS2 instruction to OFF, and then overwrite the communication format (D8400 or D8420) to
"H0000".
Set computer link using parameters.
Before starting up the RS2 instruction again, make sure to properly overwrite the communication format
(D8400 or D8420) used in the RS2 instruction.
X0
RS2 D1 K1 D2 K1 K1
X0
10.5 Using RS2 Instruction and Computer Link Communication Together (FX3U and FX3UC only)
only)
3UC
PLCs, non-protocol communication (in accordance with RS-232C or RS-485) using RS2
PLCs, the communication type operating in the communication port can be checked in the
MOV P H0086 D8400
MOV H0086 D8400
P
MOV P H0000 D8400
10 When Combined with Another Communication
A
B
C
D
E
F
G
H
I
Apx.
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