Installation And Connection; Introduction - ABB 1MRS119000 Operator's Manual

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Installation and connection

Introduction

The installation of the 1MRS119000 consists mainly of making the physical connections
between the modem and the telephone network, leased line, fixed lines or radio equip-
ment. The power supply connection and the connection for data transfer to and from the
microcontroller (protective relay, I/O unit) are made after the modem board has been
properly inserted. Mounting of the modem board is described in the manual of the equip-
ment it is part of. A separate connector is provided to connect the modem to a PC using a
standard RS232 cable. This connector is only used for setting up the modem and for
service. Setting up the modem can also be done remotely.
Installation procedure:
1. Insert the PC board properly into the rack. As the modem board normally is ordered as
part of other distribution automation equipment, this is done by the factory.
2. Connect the modem to the dial-up lines, leased line or radio equipment. For setting up
the modem, connect a PC temporarily to the modem board.
3. Attach the auxiliary supply and check the operation of the modem with help of the LED
indicators.
4. Verify that the modem settings are in conformance with the network configuration and
match with the settings of the modem used at the host computer. Check for error cor-
rection, baud rate, data compression, etc. See the chapter 'Command overview' for a
detailed description on the available modem commands.
5. Verify self-test results. See chapter 'Self-test'.
6. Check the modems operation in the network.