User`s manual

10-10
Data link DL1 (master station) function
10
Remarks
- The processing flow of a slave station is the same as those of a master station.
- Data exchange time between a PC and a module in general is shown in the below.
These time may vary with module of PC connecting to the link module (data link DL1).
- Buffer memory of the data link DL1 is renewed in each processing cycle of the PC.
A contact which turns ON by 1 cycle of PC may not be transferred.
[Example]
PC model
Data exchange time
JW30H
JW20/20H
W70H/100H
JW50/70/100
JW50H/70H/100H
Approx. 1 ms
Approx. 0.2 ms *
Approx. 0.2 ms
Approx. 6 ms
Approx. 0.1 ms
JW-31CUH1/32CUH1/33CUH1/33CUH2/33CUH3
JW-32CUM1
JW-31CUH/32CUH/33CUH
*: In case of using JW-34KB/36KB/38KB basic rack panel.
If a JW-24KB, JW-26KB or JW-28KB is used, the data exchange time will be
approximately 1 ms.
I/O PC processing
I/O PC processing I/O PC processing
Data link master station
Slave station 04
PC I/O cycle of
slave station 04
ON
OFF
1cycle ON
Communication with
slave module
Communication data turns OFF here.
Data exchange
Data exchange
Data exchange Data exchange
Data exchange Data exchange
Data exchange
(general purpose
communication port)
JW-32CUM1
Master station
PC I/O cycle
(control section)
Signal of one
cycle ON