Digital Communications Interfaces ________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
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4.
Comms Interface column
: Any module which is mapped as a comms interface on this
Bus is shown here, in its timeslot, and its status is shown as gray/green/amber/red
(disabled/OK/minor/major). Each module has its timing setting shown as well: Internal
(for Slaves or a Master) or Loop (Master only)
Clicking the block will take the user to the associated status page
7.6
Digital Comms Test Pages
This page allows a user to force the digital communications interface module into different Test
modes. As the user selects different Test modes, the graphics on the page automatically
update/change based on the Loopback Type selection. The screenshots shown below detail this
functionality.
1
2
Figure 7-27. Digital Comms Test – Normal
1.
Loopback Type
: Selects the type of loopback for the module
2.
Execute
: Sends the loopback command to the module
Note
: When a test is active the digital interface will be in Minor Alarm.
7.6.1 Digital Comms Test - Local Loopback
Local loopback is available for all digital interfaces. A local loopback test directs the local
transmit data to the local receive path, similar to when a physical loopback plug is installed.
Figure 7-28. Digital Comms Test – Local Loopback