Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
Section 6. REMOTE CONFIGURATION
6.1 INTRODUCTION
RFL recommends the use of the NMS (Network Management System) for all remote configuration and
monitoring functions. However, in special circumstances, an M-DACS multiplexer can be set up and
monitored from a controller connected to its RS-232 remote port. The controller, which may be a
simple video display terminal, a personal computer (PC), or another type of computer system, can be
connected locally using a cable or remotely using dial-up modems over a data network. The terminal
or computer used for this purpose must contain a basic communications program which provides call
setup and terminal emulation functions.
IMUX 2000 M-DACS multiplexers operate strictly in the command-response mode. That is, a
multiplexer generates a message only in response to a received command.
The Simple Command Language (SCL) provides the basis for communication between the user and
the multiplexer. The operator types SCL commands at the keyboard and views the responses on the
terminal screen. The design of the SCL command structure also allows IMUX 2000 M-DACS
multiplexers to be integrated into a multi-node, multi-vendor network controlled by the automated
Network Management System (NMS).
6.2 HARDWARE AND PROTOCOL ISSUES
6.2.1 REMOTE PORT
Each M-DACS has one remote port. The IMUX 2000 M-DACS remote port is an RS-232C
compatible, asynchronous, serial interface which can operate at baud rates from 110 bps to 115 Kbps.
The remote port on each M-DACS module is equipped with a 9-pin male (DB-9) connector, which is
located on the MA-235 Module Adapter. Instructions on setting remote port baud rate and parity
appear in paragraphs 4.12.2 and 4.12.3 of this manual. The pin assignments for the remote connector
appear in Section 2 of this manual.
M-DACS-T1 RFL Electronics Inc.
October 25, 2004 6-1 (973) 334-3100
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