D-80
FX Series PLC User's Manual - Data Communication Edition
Computer Link
9 Related Data
9.1 Related Device List
9. Related Data
9.1 Related Device List
1. Bit devices
R: Read only
R/W: Read or Write
*1. FX
0N, FX1S, FX1N and FX1NC PLCs do not support this device.
Device Name Description R/W
M8063 Serial communication error 1
Turns ON when an error occurs in serial communication using
ch 1.
R
M8120 Communication setting keep Keeps the communication setting status (for FX
0N PLCs). R/W
M8126 Global function ON
Turns ON or OFF when the global command (GW) is received
from the computer (for ch 1).
R
M8127
*1
On-demand send processing
Remains ON while the on-demand function is being executed
(for ch 1).
ON: On-demand data is being sent.
OFF: Sending of on-demand data is completed.
R
M8128 On-demand error flag
Turns ON when an error is included in a specified value for
data sending used in the on-demand function (for ch 1).
R
M8129
On-demand data byte/word
switch
Specifies the unit (byte or word) of data handled in the on-
demand function (for ch 1).
ON: Unit = Byte (8-bit)
OFF: Unit = Word (16-bit)
R/W
M8426 Global function ON
Turns ON or OFF when the global command (GW) is received
from the computer (for ch 2).
R
M8427 On-demand send processing
Remains ON while the on-demand function is being executed
(for ch 2).
ON: On-demand data is being sent.
OFF: Sending of on-demand data is completed.
R
M8428 On-demand error flag
Turns ON when an error is included in a specified value for
data sending used in the on-demand function (for ch 2).
R
M8429
On-demand data byte/word
switch
Specifies the data unit (byte or word) handled in the on-
demand function (for ch 2).
ON: Unit = Byte (8-bit)
OFF: Unit = Word (16-bit)
R/W
M8438 Serial communication error 2
Turns ON when an error occurs in serial communication using
ch 2.
R
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