User`s manual

11-13
Data link DL9 (master station) function
11
(2) Communication from slave station to slave station (from slave station to master station then
to slave station)
CDABEF
Master station (JW-32CUM1) Slave station 01 Slave station 02
I/O PC DL9 DL9 PC I/O DL9 PC I/O
Communication
Communication
ON
ON
Master station
(JW-32CUM1)
Slave
station 01
Slave
station 02
1
2
3
4
5
6
7
8
9
0
Actual delay times TD is given by total of the following
items.
1 Delay of input module ..............................TD1
2 PC delay time to detect input condition ....TD2
(Max. 1 processing cycle)
3 PC01 processing time ..............................TD3
(1 operation cycle)
4 Time to send processed result .................TD4
(Max. 1 communication cycle)
5 Time that the master station writes
received data at the PC data memory......TD5
(Max. 1 processing cycle)
6 Master station processing time ................TD6
(1 processing cycle)
7 Time that master station completes sending
the processing results ..............................TD7
(Max. 1 communication cycle)
8 Time that master station writes received
data in the PC data memory ....................TD8
(Max. 1 processing cycle)
9 Slave station 02 processing time .............TD9
(1 processing cycle)
0 Delay of output module .......................... TD10
Total delay time TD=TD1+TD2+TD3+TD4+TD5+TD6+
TD7+TD8+TD9+TD10
At system design, the above delay time should be fully
taken into account.
We recommend to construct a part of the system
taking 1 PC where accurate timing is required, and
other part of the system transfers at link system where
accurate timing is not required.