Mitsubishi FX3U-232-BD User Manual

G-23
FX Series PLC User's Manual - Data Communication Edition
Non-Protocol Communication (FX2N-232IF)
5 Creating Programs
5.4 Buffer Memory (BFM)
A
Common Items
B
N:N Network
C
Parallel Link
D
Computer Link
E
Inverter Communication
F
Non-Protocol Communication (RS/RS2 Instruction)
G
Non-Protocol Communication (FX
2N
-232IF)
H
Programming Communication
I
Remote Maintenance
Apx.
Discontinued models
6. b14 (send/receive data buffer data length)
The data is handled as shown below according to the buffer data length.
Highest-order 8-bit are ignored.
Only lowest-order 8-bit are sent
and received as valid data.
Send/receive data buffer
Send/receive data buffer
16-bit data is divided into
lowest-order 8-bit and highest-
order 8-bit when being sent or
received.
Example of send data buffer
2) 8-bit (b14 = 1)
Example of send data buffer
1) 16-bit (b14 = 0)
S
T
X
BFM
#1001
lowest-
order byte
BFM
#1001
highest-
order byte
BFM
#1002
lowest-
order byte
BFM
#1002
highest-
order byte
E
T
X
S
T
X
BFM
#1001
lowest-
order byte
BFM
#1002
lowest-
order byte
BFM
#1003
lowest-
order byte
BFM
#1004
lowest-
order byte
E
T
X
Highest-order 8 byte
Lowest-order 8 byte
Ignored Lowest-order 8 byte

Mitsubishi FX3U-232-BD Specifications

General

Brand	Mitsubishi
Model	FX3U-232-BD
Category	Controller
Language	English