Digital Communications Interfaces ________________________________________________________
RF-MCGARDPRO
Hubbell Power Systems, Inc.
–
RFL™
Products
July 1, 2022
©2022 Hubbell Incorporated
7-16
General
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If a function is selected for a timeslot, it is no longer available in the other Function
drop-down lists, on either tab. If the function is selected on TS1 Bus 1 then it is not
available on any other timeslot on Bus 1 or Bus 2
•
A comms interface may only be assigned to one Bus. If it is used on Bus 1 it is not
available in the drop-down lists on Bus 2, and vice-versa.
•
The C37.94 interface can be programmed for up to 11 contiguous timeslots. This
provides for compliance to the standard of 12x64kbps when including framing.
•
If the Async interface has any channel programmed to a baud rate of 38.4 kbps, then the
Function option “Async Ch1 & Ch2” is no longer available.
If “Async Ch1 & Ch2” is selected, “Async Ch1” and “Async Ch2” are no longer
available.
•
If two functions are selected having discontinuous timeslots, the timeslots in-between
which have no function assigned become “Idle”.
For example, functions TS2, TS3 and TS4 become “Idle” if the following
o
function TS1 = TPS Ch1 set to interface C37.94
o
function TS5 = TPS Ch2 set to interface RS-449
•
Comms interfaces must be continuous on the bus. You cannot set C37.94 on TS1, and
TS5 with nothing in-between. In this scenario, once C37.94 is selected on TS5, TS2,
TS3, and TS4 are automatically populated with “C37.94”. Any of the C37.94 timeslots
with no function will be automatically populated with “Idle”. See Section 7.3.3, page 7-
18 for an example.
•
A function must have a comms interface associated with it, and vice-versa.
Note
: Until a function/interface pair has been selected for a timeslot, that timeslot is
tagged “red” for invalid programming. “Save” cannot be performed in this state.
•
Service Channels cannot be mapped over a G.703 interface, since the function requires
framing to be enabled, and G.703 runs only at 64 kbps