User`s manual

Remote I/O (master station) function

9-10

(4) Timing in the case of 1 cycle time of the PC is shorter than required transfer processing

time.

When transfer processing time is relatively long, set the waiting time after completion of the

PC processing to synchronize the timing of the remote I/O processing and PC cycle.

(5) Data flow between the master station and the slave station.

[Ex.]

Exchange data with buffer memory

PC side I/O processing

PC I/O processing

PC processing time Waiting time

I/O processing

Control

section

Master station (JW-32CUM1) Slave station 2

I/O moduleJW-21RS JW-21RS

Input signal

Output signal

Communication

with slave station 1

Communication

with slave station 2

Communication

with slave station 1

Communication

with slave station 2

General-purpose

communication

section

I/O module

Slave station 1

(- Input signal data, _ Output signal data)

Remarks

- The JW-32CUM1 executes the I/O processing of the remote slave module after completion of

communication with the master station.

- Note that I/O processing varies between the master station (JW-32CUM1) and the slave module.