HA_CS31_TOF - HA Turn-Off Delay Timer¶
Function block HA_CS31_TOF
| Available as of PLC runtime system | V1.3 and above |
| Included in library | HA_CS31_AC500_V13.lib (V1.3) and above |
| Type | Function Block with historical values. |
This function block is standard turn-off delay with automatic data synchronization in a High Availability application.
Note
Only internal variables and outputs are synchronized. Input variables and parameters are not synchronized. If needed, use HA_CS31_DATA_SYNC to achieve the same.
This function block implements a turn-off delay timer. As soon as the IN parameter becomes FALSE, time counting in ET will start (unit: ms). Counting will proceed until the value in ET is equal to PT value. Then, it will remain constant. Q is FALSE if IN is FALSE and ET is equal to PT. Otherwise it is TRUE. Thus, the Q parameter has a falling edge as soon as time indicated in PT has run out (unit: ms).
A_CS31_TOF behaviour over time