DETAILED CASE AND MODULE DESCRIPTION
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SIG-00-22-02 JUNE 2022 (Revised September 2022)
Version: B.1
8.5.2 ATCS Vital Protocol
Vital ATCS serial protocol data may be incorporated with either the Ethernet or Echelon
LONTALK
®
protocol to allow communication to another GCP5000 unit.
When Ethernet is selected, the Laptop port on the CPU III will be used to route the vital ATCS
messages. It is recommended to connect the Laptop port to an Ethernet Switch. So the user
can still access the Web UI. This can be changed from either the Display or the CPU III Web UI.
Figure 8-16 Laptop Port Router Settings ATCS IP Field Interface
When the laptop Ethernet port is used for vital ATCS comms, it should no longer be set as
Server in the DHCP configuration. The usual setting will be to use set to Disabled and use a
fixed IP address. Note that this has to be set from the CPU III Web UI.
Figure 8-17 Laptop Port DHCP Configuration