Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
REMOTE CONTROL INTERFACE
When installed in an IMUX 2000 remote controllable shelf, the RFL VF-8A module can be operated
under local or remote control. When under remote control, certain configuration parameters can only
be changed through the RS-232 remote port on the multiplexer. The remote interface for these modules
involves two codes: a “P” (parameter) code, and an “S” (status) code. See the IMUX 2000 instruction
manual for more information on the remote control interface.
The RFL VF-8A reports itself as a “Type 125” module when installed in a T1 or E1 system.
“P” CODES
“P” codes, when used in the parameter field on a “SET” command, allow the user to set certain
parameters on the module by remote control, just like setting the switches on a module under local
control. “P” codes also appear in the response to a “CONFIG?” query, showing the current parameter
settings on the module.
There are six “P” codes for the RFL VF-8A: P1 through P6. Each of these P codes can be a decimal
number from 0 to 255, which can also be represented as an eight-digit binary number (in parenthesis).
The binary representation is more useful for setting and interpreting the “P” codes, since each binary
digit (0 or 1) corresponds to the ON or OFF setting for a particular switch on the module. Table 7
describes the meanings of the “P” codes for the RFL VF-8A in normal mode. Table 6 describes the
meanings of the “P” codes for the RFL VF-8A.
A typical RFL VF-8A response to a “CONFIG?” query of a T1 or E1 system in normal mode looks
like this:
* OK
CHANNEL CARD 3, TYPE 125
UNDER REMOTE CONTROL
SRVC = ON
P01 = 3 (B00000011)
NOTE
When using binary numbers with a SET command, they must be preceeded by the letter “B”
as shown in the following example:
<MULTIPLEXER ADDRESS>:<CARD ADDRESS>:SET:P1 = B00000011;
Besides using the P code, it is also possible to turn module service on or off by sending one of the
following in the parameter field with a SET command:
SRVC = ON
SRVC = OFF
RFL VF-8A RFL Electronics Inc.
August 6, 2010 20 (973) 334-3100
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