Prepare projects for respective display units to be transferred. Create all the projects with the same version of GP-Pro EX, and use the same settings in the [System Settings], [Peripheral Settings] link's [Device/PLC].
Please refer to the Settings Guide for details.
5.4.7 System Settings [Display Unit] - [Extended] Settings Guide
Create projects so that the total constant communication traffic of connected display units does not exceed 8090. If the total constant communication traffic exceeds the upper limit, the slave unit attempting connection will be refused access. In addition, if the upper limit is exceeded by the master display unit only, slave display units cannot be connected.
To calculate data traffic, refer to the following.
7.6.2 Procedure - How to Calculate the Communication Traffic
From the [Project] menu, select [System Settings] and [Display Unit], then click the [Extended Settings] tab.
From [Ethernet Multilink Settings], select the [Enable Ethernet Multilink] check box. From [Action Mode], select Master or Slave display unit to transfer this project, and input the IP address of the master display unit in [Master IP Address].
When setting so that only the slave display units with a particular IP address can be connected, click [Filtering] and set from the [Filter Settings] dialog box.
Create screen data and transfer it to the display unit.