Step 1

Connect your controllers to an Ethernet hub that is plugged into your PC.

Step 2

Pair the controllers using the first synchronization Ethernet port. Install a terminator stub in the second port to prevent possible errors.

How to Sync Multiple RL-C21 Devices in 3 steps — controller connection scheme

You can create a common bus using up to 8 RL-C21 controllers. To do that, consult the schematic below:

How to Sync Multiple RL-C21 Devices in 3 steps — multiple controller connection scheme

Step 3

Turn on your RL-C21 controllers and open RULA Software.
Go to the configuration tab and select hardware settings. Select both of your RL-C21 controllers and assign one of them to be a master device.  

How to Sync Multiple RL-C21 Devices in 3 steps — hardware settings tab

If you have any problems with syncing multiple RL-C21 devicescontact our 24/7 technical support per email or call +371 6610 2166.