RFL Electronics IMUX 2000 - Page 886

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL NCM RFL Electronics Inc.
November 1, 2012 40 (973)
334-3100
TROUBLESHOOTING
If there is an apparent malfunction, first check that the configuration is appropriate for the transmission
system in use, and that transmit and receive configurations are identical.
Problems may occur at the common equipment or facility level that may affect the operation of this
module. Refer to the “Maintenance” section in your multiplexer manual for system analysis
procedures.
REMOTE CONTROL USING SCL COMMANDS
When installed in an IMUX 2000 remote controllable shelf, the NCM 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 this module
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 NCM module reports itself as a “Type 117” module.
“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 ten “P” codes for the NCM module: P01 through P10. 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 6 describes the meanings of the “P” codes for the NCM module.
A typical NCM module response to a “CONFIG?” query looks like this:
* OK
CHANNEL CARD 3, TYPE 117
UNDER REMOTE CONTROL
SVCE = ON
P01 = 3 (B00000011)
P02 = 1 (B00000001)
P03 = 1 (B00000001)
P04 = 1 (B00000001)
P05 = 1 (B00000001)
P06 = 1 (B00000001)
P07 = 1 (B00000001)
P08 = 1 (B00000001)
P09 = 1 (B00000001)
P10 = 1 (B00000001);