NAiS FP Series, User Manual

Page: 221 / 326

FP
Σ
Communication Function 3 PLC Link Function
10 - 16
10.2.4 Setting the Largest Station Number for a PLC Link
The largest station number can be set using system register no. 47.
Sample settings
No. of units linked Setting contents
When linked with 2 units 1st unit: station no. 1 is set
2nd unit: station no. 2 is set
A largest station no. of 2 is set for each.
When linked with 4 units 1st unit: station no. 1 is set
2nd unit: station no. 2 is set
3rd unit: station no. 3 is set
4th unit: station no. 4 is set
A largest station no. of 4 is set for each.
When linked with n units Nth unit: station no. n is set
A largest station no. of N is set for each.
Notes
Station numbers should be set sequentially and consecutively,
starting from 1, with no breaks between them. If there is a
missing station number, the transmission time will be that
much longer.
If fewer than 16 units are linked, the transmission time can be
shortened by setting the largest station number in system
register no. 47.
The same value should be set for the largest station numbers
of all of the PLCs that are linked.
If there are fewer than 16 units linked and the largest station
number has not been set (default = 16), or the largest station
number has been set but the station number settings are not
consecutive, or the station number settings are consecutive
but there is a station for which the power supply has not been
turned on, the response time for the PLC Link (the link
transmission cycle) will be longer. For further information,
please refer to page 10 - 22, “PLC Link Response Time”.