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MERLIN LEGEND Communications System Release 6.0
System Manager’s Guide
555-660-118
Issue 1
February 1998
Managing the System
Page 6-20Programming from a PC with SPM
6
Types of PC Connections 6
There are three ways to connect the PC to the control unit:
■ Direct Local Connection. For a direct local connection, you must connect
the PC to the system programming jack (labeled
ADMIN
). This is the lower
modular RS-232 jack on the processor module. (The upper jack is reserved
for the SMDR printer.)
■ Local Modem Connection. For a local modem connection, you must use
a modem (either connected to or built into the PC) to access the internal
modem in the control unit. Connect the modem to a 012 or 016 (Release
4.0 and later systems only) module in the control unit.
■ Remote Modem Connection (DOS-Based SPM Only). For a remote
modem connection, you must use a modem (either connected to or built
into the PC) to access the internal modem in the control unit. You must also
use a modem to dial into the system using remote access.
NOTE:
Remote access (modem connection) has priority over local access (direct
connection), unless a backup or restore procedure is in progress through a
direct local connection. If a modem connection is attempted while any other
type of on-site programming is in progress (either at the system console or
at a directly connected PC), the system sends a message to the on-site
programmer. The message indicates that a modem connection is being
established, and the on-site programming session is terminated.
Access to System Programming 6
Before you can begin system programming from a PC, you need to access the
SPM software. The procedure for reaching SPM depends on whether your PC is
connected to the control unit with a modem (either local or remote) or without a
modem (direct). This section describes both of these procedures.
With a Direct Local Connection 6
To begin using SPM when your PC is connected directly to the control unit, follow
the steps below. For information about the procedure format, see “Using the
Programming Procedures” on page 6–3.
Console/Display Instructions Additional Information
Set up the proper physical connections between the PC and control unit.
See Chapter 2 of
System Programming.
If you installed SPM on the hard disk of the PC, go to Step 5.