B-48
FX Series PLC User's Manual - Data Communication Edition
N:N Network
10 Related Data
10.1 Related Device List
2. Word devices (data registers)
R : Read only (used as a contact in program)
R/W : Read or Write
M : Master station (station No. 0)
L : Slave station (station No. 1 to 7)
Device
number
Name Description
Initial
value
Detec-
tion
R/W
Devices for checking
D8173
Corresponding station
number settings status
Provided to check the station number. — M, L R
D8174
Slave station quantity
setting status
Provided to check the number of slave stations. — M, L R
D8175
Refresh range setting
status
Provided to check the refresh range. — M, L R
D8063
Serial communication
error code 1 (ch 1)
Stores the serial communication error code for
ch. 1 (in the FX
3U and FX3UC).
—M, LR
D8438
Serial communication
error code 2 (ch 2)
Stores the serial communication error code for
ch. 2 (in the FX
3U and FX3UC).
—M, LR
Devices for communication setting
D8176
Corresponding station
number settings
Provided to set the station number. 0 M, L R/W
D8177
Slave station quantity
setting
Provided to set the number of slave stations used
in communication.
7MR/W
D8178 Refresh range setting Provided to set the refresh range. 0 M R/W
D8179 Number of retries Provided to set the number of retry times. 3 M R/W
D8180 Monitoring time Provided to set the no-response monitoring time. 5 M R/W
Devices for checking communication status
D8201 Present link scan time Current value of the network cycle time — M R
D8202 Maximum link scan time Maximum value of the network cycle time — M R
D8203
Data transfer sequence
error count
Amount of data sequence errors that occurred in
the master station
—LR
D8204
to D8210
Data transfer sequence
error count
Amount of data sequence errors that occurred in
a slave station.
However, data sequence errors occurring within
the slave station itself cannot be counted.
—M, LR
D8211
Data transmission error
code
Stores the error code for the master station. — L R
D8212
to D8218
Data transmission error
code
Stores the error code for a slave station.
However, data sequence errors occurring within
the slave station itself cannot be counted.
—M, LR
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