Mitsubishi Electric FX3U-232-BD User Manual page 176

FX Series PLC User's Manual - Data Communication Edition
N:N Network
10.1.2 For FX and FX
0N
1. Bit devices
Device
number
Devices for communication setting
M8038 Parameter setting
Devices for checking communication status
M504 Data transfer sequence error
M505 to M511 Data transfer sequence error
M503 Data transfer sequence ON
R: Read only (used as a contact in program)
M: Master station (station No. 0)
2. Word devices (data registers)
Device
number
Devices for checking
Corresponding station
D8173
number settings status
Slave station quantity setting
D8174
status
D8175 Refresh range setting status Provided to check the refresh range.
Devices for communication setting
Corresponding station
D8176
number settings
D8177 Slave station quantity setting
D8178 Refresh range setting
D8179 Number of retries
D8180 Monitoring time
Devices for checking communication status
D201 Present link scan time
D202 Maximum link scan time
Data transfer sequence error
D203
count
Data transfer sequence error
D204 to D210
count
D211 Data transmission error code Stores the error code for the master station.
D212 to D218 Data transmission error code
D219 to D255 Not applicable
R: Read only R/W: Read or Write
M: Master station (station No. 0)
B-58
PLCs
1S
Name
Communication parameter setting flag
Turns ON when a data transfer sequence
error occurs in the master station.
Turns ON when a data transfer sequence
error occurs in a slave station.
However, data transfer sequence errors within
the slave station itself cannot be detected.
Remains ON while data transfer is being
executed.
L: Slave station (station No. 1 to 7)
Name
Provided to check the station number.
Provided to check the number of slave
stations.
Provided to set the station number.
Provided to set the number of slave stations
used in communication.
Provided to set the refresh range.
Provided to set the number of retries.
Provided to set the no-response monitoring
time.
Stores the current value of the network cycle
time.
Stores the maximum value of the network
cycle time.
Stores the amount of data sequence errors
that occurred in the master station.
Amount
occurred in a slave station.
However, data sequence errors that occurred
within the slave station itself cannot be counted.
Stores the error code for a slave station.
However, data sequence errors that occurred
within the slave station itself cannot be counted.
Provided for the internal processing.
L: Slave station (station No. 1 to 7)
Description
Description
of data sequence errors
10 Related Data
10.1 Related Device List
Initial Detec-
R/W
value tion
— M, L R
— L R
— M, L R
— M, L R
Initial Detec-
R/W
value tion
— M, L R
— M, L R
— M, L R
0 M, L R/W
7 M R/W
0 M R/W
3 M R/W
5 M R/W
— M R
— M R
— L R
that
— M, L R
— L R
— M, L R
— — —