Can a BAS2800+ UNC 532 Outstation Be Configured to Use a Modem and BAS 2800+ Terminal?

[Product_Support]

Issue

Configuring a UNC 532 outstation to operate with both a modem and a BAS 2800+ terminal presents challenges due to hardware limitations.

Product Line

Satchwell BAS & Sigma

Environment

• BAS 2800+
• UNC 532
• Modem

Cause

The UNC 532 controller has shared UART communication ports, which restrict simultaneous use of a modem and a BAS 2800+ terminal when the controller is connected via LAN. This is due to the internal architecture where Channel 3 becomes unavailable in networked mode.

Resolution

LAN-connected configuration:

• Channel 3 is disabled.
• Modem and terminal cannot be used together.
• Refer to the Node Configuration window:
  • PL3 = Port 3
  • PL4 = Port 2

    

    

Standalone configuration:

• Modem and BAS 2800+ terminal can be configured together.
• This setup bypasses LAN restrictions and allows full use of UART channels.