80
1MRS750915-MUM
Machine Terminal
Technical Reference Manual, General
REM 54_
5.1.15.4. Interlocking
The interlocking LED text can be defined in the same manner as for the other alarm
channels. The colour of the interlocking LED is yellow and cannot be changed. The
normal LED state is inactive (no light). Furthermore, the interlocking LED has two
special modes. The first mode, recognized by a steady yellow light, indicates that
control operation has been interlocked. The second mode, recognized by a blinking
red light, indicates that the interlocking is in bypass mode (control test mode).
General control test mode
The system provides a general interlocking bypass mode (Main menu/
Control/Interl bypass) that overrides all interlocking signals. Activation of
the interlocking bypass mode activates the interlocking enable signals of all control
objects. Thus, all local control actions are possible and the enable signals
(OPENENA, CLOSEENA) of controllable objects are not checked while the objects
are commanded. As long as the mode is active, the interlocking LED on the HMI is
blinking red. Additionally, the assisting window of the display will indicate the
special condition.
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