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and parameters (set during manufacturing), see the table in "Default Parameter Values" on
page B-1 of the service guide for your system. The following flags can be managed:
Remote Authorization: Only the local operator can enable this flag to enable remote
maintenance to be performed. Both the local and remote operators can disable it.
BUMP Console Present: If enabled, SystemGuard displays the MAINTENANCE MENU
on the BUMP console (line S1). If disabled, the MAINTENANCE MENU is not available
on the BUMP console.
Autoservice IPL: When enabled, this flag enables an automatic IPL even if the Key Mode
Switch is in the Service position, thus avoiding the display of the MAINTENANCE MENU.
Extended Tests: This parameter determines under what conditions extended power on
self-tests are run at IPL time, after the regular power on self-tests (POSTs). If the
parameter is enabled, the extended tests are run. If the parameter is disabled, the
extended tests are not run.
Power-On Tests in Trace Mode: When enabled, supports the running of POST tests in
trace mode, which gives extra information about how tests are conducted. A dedicated tty
line is required, this is to be used only when directed by service support personnel.
Power-On Tests in Loop Mode: When enabled, SystemGuard loops on the POST tests
and does not IPL.
Fast IPL: When enabled, the long POST tests are not run, shortening the INIT phase.
This feature lets you start the machine quickly, when the test performance is not
necessary. This flag is not permanent. It only remains set until the next IPL, at which point
it is automatically cleared.
Set Electronic Mode Switch to Normal: This command sets the Electronic Mode Switch to
the Normal position. Keep in mind that the Electronic Mode Switch is only taken into
account if the Key Mode Switch is in the Normal position. The Electronic Mode Switch is
also set to Normal each time the Key Mode Switch is moved.
Set Unit Number
Use this option to assign logical numbers to units that you add to your system.
Whenever a new unit is added, this command must be run to update the unit configuration
table.
Simply enter 2 in the main STAND-BY MENU to select this option. The process of assigning
a unit number is automatic: there is no need to pick a number.
An RS-485 bus interconnects all system and expansion units, each being addressed using a
logical number of 0 or 1. The base unit, where the SystemGuard and the operator panel are
present is the master of the RS-485 bus, and is always given logical number 0. The first
expansion unit is assigned the logical number 1.
2-16
Service Guide
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