Outline - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (FX
1.

Outline

The communication special function block operating in accordance with RS-232C, FX
referred to as "232IF"), is connected to an FX
full-duplex method between equipment with RS-232C interfaces such as a personal computer, bar code
reader or printer.
For the contents of the hardware, refer to the "FX
1.1 Features
1. Two or more 232IF (operating in accordance with RS-232C) blocks can be connected.
Two or more RS-232C interface blocks can be connected to an FX PLC.
1) For FX , FX
2N
Up to eight blocks can be connected to one PLC.
*1. Up to seven blocks can be connected to the FX
2) For FX PLCs
2NC
Up to four blocks can be connected to one PLC.
2. Non-protocol communication
Communication is executed in the full-duplex, asynchronous system, non-protocol method. The communication
format can be specified using the buffer memory (BFM).
The FROM and TO instructions are applicable for the buffer memory.
(In FX and FX
3U 3UC
3. Send/receive data buffer of 512 bytes/256 words
The send data buffer and receive data buffer can store 512 bytes/256 words independently.
In the RS-232C interlink connection mode, the 232IF can receive data beyond 512 bytes/256 words.
4. Built-in ASCII-Hexadecimal conversion function
By using this built-in conversion function, hexadecimal numeric values (0 to F) inside the send data buffer can
be converted into ASCII code when being sent, and received ASCII code can be converted into hexadecimal
values (0 to F) when being stored in the receive data buffer.
FX PLC
Printer
Bar code reader
-232IF)
2N
3UC *1
and FX PLCs
3U
PLCs, other instructions are also applicable.)
System
FX -232IF FX
2N
, FX , FX , or FX
2N 3U 2NC 3UC
-232IF Hardware Manual".
2N
-32MT-LT(-2) PLC.
3UC
Important points and reference
chapter/section
-232IF
2N
To check connectable PLC models,
refer to Chapter 1.
For selection, refer to Chapter 3.
For wiring, refer to Chapter 4.
1.1 Features
-232IF (hereafter
2N
PLC to exchange serial data in the
1 Outline
A
B
C
D
E
F
G
H
I
Apx.A
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