D-49
FX Series PLC User's Manual - Data Communication Edition
Computer Link
7 Commands
6.6 Transfer Data in Character Area
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
7. Commands
This chapter explains specification methods and specification examples of commands in dedicated protocols
used in computer link communication type.
For control procedures in dedicated protocols, refer to "6. Control Procedures and Setting Methods".
The table below shows a reference section for each command.
Command Contents of processing
Applicable PLC
Reference
section
FX3U,
FX
3UC
FX2(FX), FX2C, FX1S, FX0N,
FX
2N, FX1N, FX2NC, FX1NC
BR Reads bit devices in 1-point units.  7.1
WR
Reads bit devices in 16-point units, or word devices
in 1-point units.
 7.2
QR
Reads bit devices in 16-point units, or word devices
in 1-point units.
 —7.3
BW Writes bit devices in 1-point units.  7.4
WW
Writes bit devices in 16-point units, or word devices
in 1-point units.
 7.5
QW
Writes bit devices in 16-point units, or word devices
in 1-point units.
 —7.6
BT
Specifies bit devices arbitrarily in 1-point units, and
sets or resets them (forcibly sets them to ON or
OFF).
 7.7
WT
Specifies bit devices arbitrarily in 16-point units, and
sets or resets them (forcibly sets them to ON or
OFF). Or specifies word devices arbitrarily in 1-point
units, and writes data to them.
 7.8
QT
Specifies bit devices arbitrarily in 16-point units, and
sets or resets them (forcibly sets them to ON or
OFF). Or specifies word devices arbitrarily in 1-point
units, and writes data to them.
 —7.9
RR Sets a PLC to RUN mode in remote control. 
7.10
RS Sets a PLC to STOP mode in remote control. 
PC Reads the PLC model name code. 7.11
GW
Turns the global function ON or OFF in all linked
PLCs.
7.12
—
Offers the on-demand function (by which a PLC
gives a sending request), and does not offer any
command.
7.13
TT
Returns received characters back to the computer
as they are.
7.14
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