Test Functions; Hardware Test - Siemens simatic hmi op27 Equipment Manual

Test Functions

Overview
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

Start hardware test Carry out the following steps to start the hardware test:
Test procedure
Settings can be defined in the selection screen which affect the user interface
and relay output. The following hardware tests can be performed:
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OP27, OP37 Equipment Manual
Release 05/99
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Step
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.
If the system test should be canceled, press the
following system key:
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
Action
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ACK
ESC
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