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This is the web edition of the original ⮫ AC500-S safety user manual, version 1.3.2. This web edition is provided for quick reference only. The original safety user manual must be used to meet functional safety application requirements. |
Only a short description is provided for standard POUs from Safety_Standard.lib.
RS
- Bistable function, reset dominant
- Q1 = NOT RESET1 AND (SET OR Q1)
SEMA
- Software semaphore. Interruptible!
- BUSY is TRUE, if there was a call with CLAIM = TRUE,
- but no call with RELEASE = TRUE.
- CLAIM = TRUE sets BUSY = TRUE;
- RELEASE = TRUE sets BUSY = FALSE;
SR
- Bistable function, set dominant
- Q1 = SET1 OR (NOT RESET AND Q1)
CTD
- Counter down.
- CV is decremented by 1 if CD has a rising edge.
- Q is TRUE, if CV reached 0.
CTU
- Counter up.
- CV is incremented by 1 if CU has a rising edge.
- Q is TRUE, if CV is reached PV.
CTUD
- Counter up down
- CV is incremented by 1 if CU has a rising edge.
- CV is decremented by 1 if CD has a rising edge.
- QU is TRUE, if counter is PV.
- QD is TRUE, if counter is 0.
CONCAT
- Concatenation of two strings.
DELETE
- Delete LEN characters of STR, beginning at the POS-th character position.
- POS = 1 is the first character.
FIND
- Find the character position of the beginning of the first occurrence of STR2 in STR1.
- If no occurrence of STR1 is found, then the result is 0.
INSERT
- Insert STR2 into STR1 after the POS-th character position.
- POS = 0 inserts before the first character.
- POS = 1 inserts after the first character.
LEFT
- Return leftmost SIZE characters of STR.
LEN
- String length function.
- Returns the number of characters in STR.
MID
- Return LEN characters of STR, beginning at the POS-th character position.
- POS = 1 is the first character.
REPLACE
- Replaces L characters of STR1 by STR2,
- starting at the POS-th character position and returns the new string.
- POS = 1 is the first character.
RIGHT
- Returns rightmost SIZE characters of STR.
RTC
- Sets CDT to PDT when rising edge in EN and starts increasing CDT.
- With EN = FALSE, CDT set to DT#1970-01-01-00-00:00
TOF
- Timer of delay.
- Q is FALSE, PT milliseconds after IN had a falling edge.
TON
- Timer on delay.
- Q is TRUE, PT milliseconds after IN had a rising edge.
TP
- Timer pulse.
- Q produces a high-signal with the length of PT on every rising edge on IN.
F_TRIG
- Falling edge detection.
R_TRIG
- Rising edge detection.