11 EXAMPLE OF COMMUNICATION BETWEEN THE MASTER STATION AND REMOTE DEVICE STATIONS
11.1.4 Performing the data link
Controlling data link
Module is normal
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Turn on the remote device station first, and then the master station to start the data
link.
(1) Confirming the operation with the LED indicators
The following diagram shows the LED status of the master station and the
remote device station when the data link is being performed normally.
(a) LED indication of the master station
Make sure that the LEDs are as follows:
(b) LED indication of the remote device station
Make sure that the LEDs are as follows:
On
Off
Sending data
The data link is being performed
normally
Receiving data
On
Off
24 V DC is being supplied
Module is normal
The data link is being performed
normally
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