Operating Modes - pro bel Freeway Manual

Pro-Bel ltd Technical manual
• 5.3 Operating modes
The Freeway master router has two basic modes of operation selected by sw2_3.
• Normal Run mode
• Special Test mode
Normal run mode
In Normal mode, the way in which the control card operates is dependant on the
protocol defined for each of the general remote ports.
For instance, if one of the General Remote ports is configured to support multi­
drop comms protocol then, from this port s point of view, the controller is acting as
a basic system controller.
If, on the other hand, one of the general remote ports is configured to support
General Switcher Protocol then, from this ports point of view, the control card is
acting as a local controller for a router. It will be controlled by a more intelligent
control system. The remainder of this chapter considers normal operation in
detail. But first a description of the Special Test mode.
Special test mode
A
WARNING:
It is only appropriate that this mode is selected by
~ suitably qualified service and maintenance staff.
The special test mode program is situated in the Boot sector of the FLASH EPROM.
Special test mode also provides a number of tests for testing various components
of the 2440 hardware, e.g. RAM/EPROM, serial ports, LEOS and router control bus.
The tests are initiated via the editor port (see Terminal command set for
command syntax). This section describes each of the tests requiring invocation via
the Editors as well as those running cyclically.
RAM/EPROM
tests
This test performs a read/write RAM test and an EPROM checksum test. Results are
reported to the terminal. This test can be performed with the controller sited in a
Freeway
frame.
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