Number Of Retries [D8179] - Mitsubishi Electric FX3U-232-BD User Manual

FX Series PLC User's Manual - Data Communication Edition
N:N Network
4. Cautions on use
1) Cautions on using FX
When FX
0N
0.
If any other pattern is selected, data transfer error will occur in all FX
system, and the link time will become longer.
2) Occupied devices
The devices used in each pattern are occupied for the N:N Network in all stations.
Make sure that such devices are not used in general programs.

10.2.13 Number of retries [D8179]

Set a value ranging from 0 to 10 to the special data register D8179 (initial value: 3).
1. Stations requiring program setting
The master station requires program setting, and slave stations do not require program setting.
2. Detailed contents
When any response is not given after the specified number of retries, the irresponsive station is regarded as
having a data transfer sequence error by other stations.
10.2.14 Monitoring time setting [D8180]
Set a vale ranging from 5 to 255 to the special data register D8180 in "10 ms"
1. Stations requiring program setting
The master station requires program setting, and slave stations do not require program setting.
2. Detailed contents
If data transfer between the master station and a slave station requires time longer than the monitoring time
set here, the master station or slave station is regarded as abnormal.
10.2.15 Present link scan time [D8201] [D201]
This device stores the current value of the network cycle in the N:N Network (unit: 10 ms).
1. Stations requiring program setting
The master station requires program setting.
2. Detailed contents
The device used varies depending on the FX Series.
FX Series
FX , FX , FX
1N 1NC
FX , FX , FX
2NC 3S
FX , FX , FX
3GC 3U
FX , FX
0N 1S
3. Cautions on use
Do not change the preset numeric value using a program or programming tool.
B-64
and FX PLCs
0N 1S
and/or FX PLCs are included in the system, make sure to set the refresh range to pattern
1S
Data transfer sequence ON
,
2N
, D8201
3G
3UC
D201
10 Related Data
10.2 Details of Related Devices
and FX PLCs included in the
0N 1S
(initial value: 5 [50 ms]).
units