ABB REO 517 Applications Manual page 63

Multi-function terminals for railway application
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TUV--BLKTR
TEST
TUV--TEST
Block TUV=Yes
TUV--BLOCK
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Blocking of signals during test
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This blocking function is only active during operation in the test mode, see example in
figure28. When exiting the test mode, entering normal mode, this blocking is disabled
and everything is set to normal operation. All testing will be done with actually set and
configured values within the terminal. No settings etc. will be changed. Thus no mis-
takes are possible.
The blocked functions will still be blocked next time entering the test mode, if the
blockings were not reset.
The blocking of a function concerns all output signals from the actual function, so no
outputs will be activated.
Each of the terminal related functions is described in detail in the documentation for the
actual unit. The description of each function follows the same structure (where appli-
cable).
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53

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