Section 5
1MAC309294-MB F
Control functions
354
RER620
Technical Manual
Figure 190:
Functional module diagram
Up-down counter
Each rising edge of the UP_CNT input increments the counter value CNT_VAL by one
and each rising edge of the DOWN_CNT input decrements the CNT_VAL by one. If there
is a rising edge at both the inputs UP_CNT and DOWN_CNT, then the counter value
CNT_VAL is unchanged. The CNT_VAL is available through the Monitored data view.
The counter value CNT_VAL is stored in a non-volatile memory. The range of the counter
is 0...+2147483647. The count of CNT_VAL saturates at the final value of 2147483647,
that is, no further increment is possible.
The value of the setting
Counter load value
is loaded into counter value CNT_VAL either
when the LOAD input is set to TRUE or when the
Load Counter
is set to “Load” in the
LHMI. Till the LOAD input is TRUE, it prevents all further counting.
The function also provides status outputs UPCNT_STS and DNCNT_STS. The
UPCNT_STS is set to TRUE when the CNT_VAL is greater than or equal to setting
Counter load value. DNCNT_STS is set to TRUE when the CNT_VAL is equal to zero.
The RESET input is used for resetting of the function. When this input is set to TRUE or
when the
Reset counter
is set to “reset” the CNT_VAL is forced to zero.
DOWN_CNT
UP_CNT
LOAD
RESET
Up-down
counter
UPCNT_STS
DNCNT_STS
Содержание RER620
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Страница 22: ...Section 1MAC309294 MB F 16 RER620 Technical Manual ...
Страница 88: ...Section 3 1MAC309294 MB F Basic functions 82 RER620 Technical Manual ...
Страница 278: ...Section 4 1MAC309294 MB F Protection functions 272 RER620 Technical Manual ...
Страница 362: ...Section 5 1MAC309294 MB F Control functions 356 RER620 Technical Manual ...
Страница 418: ...Section 7 1MAC309294 MB F Measurement functions 412 RER620 Technical Manual ...
Страница 428: ...Section 8 1MAC309294 MB F Recording functions 422 RER620 Technical Manual ...
Страница 464: ...Section 9 1MAC309294 MB F Other functions 458 RER620 Technical Manual ...
Страница 554: ...Section 10 1MAC309294 MB F General function block features 548 RER620 Technical Manual ...
Страница 568: ...Section 12 1MAC309294 MB F Relay physical connections 562 RER620 Technical Manual ...
Страница 574: ...Section 13 1MAC309294 MB F Technical data 568 RER620 Technical Manual ...
Страница 576: ...Section 14 1MAC309294 MB F Relay and functionality tests 570 RER620 Technical Manual ...
Страница 578: ...Section 15 1MAC309294 MB F Applicable standards and regulations 572 RER620 Technical Manual ...
Страница 582: ...Section 16 1MAC309294 MB F Glossary 576 RER620 Technical Manual ...
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