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OP27, OP37 Equipment Manual
Release 05/99
Test Functions
The OP27 and OP37 automatically test the most important hardware compo-
nents when power is switched on or voltage applied.
In addition, the OP27 has a test program for testing hardware components as
and when necessary.
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Hardware Test
Carry out the following steps to start the hardware test:
Step
Action
1
Press the following key combination while the
unit is starting up:
Keep the keys pressed until a system request
appears on the screen asking whether the hardware
test should be started.
+
+
2
If the test should be started, press the system key
depicted on the right.
The selection screen is opened.
ACK
If the system test should be canceled, press the
following system key:
ESC
Settings can be defined in the selection screen which affect the user interface
and relay output. The following hardware tests can be performed:
test the internal memory,
test the serial interfaces,
test the keyboard and display and
test internal functional units – for example, watchdogs or real-time clock
Overview
Start hardware test
Test procedure
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