Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
7.7 CHANNEL MODULE REMOTE ACCESS
Many of the channel modules available for use with the IMUX 2000 multiplexers can be set up and
monitored remotely. Specifically, the SET, CONFIG? and STATUS? commands may be issued to
channel modules by using a subaddress of the form "Cn," where "n" is the card address of the target
channel module. Valid card (or module) address range from 1 to 36.
As discussed earlier, setting hardware switches on each channel module determines its card address.
We recommend setting the card address of each channel module in a Main Shelf to its physical slot
number (3 through 18), and the address of each channel module in an Expansion Shelf to its physical
slot number plus 18. For example, a channel module located in Slot 4 of an Expansion Shelf should be
assigned a card address of 22.
It is important to note again that remote communication with channel modules located in drop/insert
multiplexers can only take place through the remote port of the DI-A module. Channel module
commands received by the DI-B module will be ignored.
WARNING
In a Terminal multiplexer or in a DI-A multiplexer using fiber, you cannot set any card in the
shelf to Address 1. In a DI-B multiplexer using fiber, you cannot set any card in the shelf to
Address 3. These addresses are used by the optical interface adapters.
7.7.1 DETERMINING CHANNEL MODULE STATUS
To determine the status of a given channel module in an IMUX 2000 multiplexer, issue a STATUS?
command in the following form:
<Address>:Cn:STATUS?:;
where n is the number of the target channel module. For example, to request the status of channel
module #4 in multiplexer #15, issue the command:
15:C4:STATUS?:;
Note that the subaddress field in channel module STATUS? command is always of the form Cn,
regardless of whether it is located in a terminal or a drop/insert multiplexer.
The response to a valid channel module STATUS? command indicates whether the module is in an
alarm or alert state, and may provide other information as well, depending on the specific channel
module type. The response always takes this general form.
* OK
CHANNEL CARD nn, TYPE mmm
(one or two lines indicating Alert/Alarm conditions, if present, followed by one or more
lines stating the values of each "S" [status] parameter);
IMUX 2000E1 RFL Electronics Inc.
February 28, 2006 7-27 (973) 334-3100
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