User`s manual

11-14
Data link DL9 (master station) function
11
[4] How to make synchronize
In order to securely execute data transfer between a master station (JW-32CUM1) and a slave station, we
recommend to synchronous these stations.
(1) Synchronous with OUT instruction
Master station Slave station 01
ｺ1000 to ｺ1002 (
ｺ1003 to ｺ1004 (
) ｺ1000 to ｺ1002
) ｺ1003 to ｺ1004
Sending
Receiving
Sending station program
00000
10000
10030
10000
10000
10030
F-45
Receiving side
- Turn ON 10000 at the sending station. OUT 10000 shall be self latch circuit.
- When 10000 of the receiving station turns ON, it turns ON OUT 10030. Return this signal to the
sending station.
Remarks
As shown in the figure below, module may not able to receive signal of one scanning interval of the
PC.
10000
00000
F-44
(2) n byte transfer
To make synchronous for all the data, add the synchronous signal at the head and the end of data
area.
ｺ1200
ｺ1203
ｺ0200
ｺ0203
Synchronous signal Synchronous signal
Data transfer
Synchronous
signal 12000
Synchronous
signal 12030
Synchronous
signal
F00
F00
ｺ0201
ｺ0400
ｺ0202ｺ0401
F00
F00
ｺ0400
ｺ0401
ｺ1201
ｺ1202
00000
02000 02030