Rockwell Automation Publication 5069-UM003B-EN-P - January 2020 47
Compact 5000 I/O Serial Module Features Chapter 3
DF1 Master Protocol
The DF1 Master protocol is used when connecting from the controller to
multiple devices.
In DF1 Master protocol, RS-485 and Serial Radio Modem can be used.
Figure 14 - DF1 Master Protocol
Configuring a Master Station for Standard Polling Mode
To configure a serial module as a master station using standard communication,
complete the following steps.
1. Open the Logix Designer project that includes the serial module.
2. Right-click the module and choose Properties. Configure Channel 1 to
DF1 Master if it is not configured to DF1 Master
Studio 5000
CompactLogix 5380
RS-485
DF1 Controller (or device)
MLX, PLC5, SLC, and so on
IMPORTANT DF1 and DH-485 protocols use channel 1 only and must be local.
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