Timer ($Ac_Timer) - Siemens SINUMERIK 828D Function Manual

Detailed description
2.3 System variables for synchronized actions
Writing during the main run
The following requirements must be satisfied for writing during the main run:
● The access authorization at the time of writing must be sufficient for writing.
● The machine or setting data must have the property "Effective immediately".
Program code
; The switching position of the SW cam $SN_SW_CAM_ ... must,
; depending on the current setpoint of the X axis in WCS $AA_IW[X],
; only be written during the main run
ID=2 WHEN $AA_IW[X] > 10 DO $$SN_SW_CAM_PLUS_POS_TAB_1[0] = 20
$$SN_SW_CAM_MINUS_POS_TAB_1[0]=20
A complete overview of the properties of the machine and setting data can be found in:
References
● Parameter Manual: Lists (Book 1)
● Parameter Manual: Detailed Machine Data Description
2.3.8

Timer ($AC_TIMER)

The $AC_TIMER[<index>] variables are channel-specific arrays of system variables.
Data type:
<Index>:
Unit:
Number per channel
The maximum number of $AC_TIMER variables per channel can be set via the machine
data:
MD28258 $MC_MM_NUM_AC_TIMER = <maximum number>
28
REAL
Array index: 0, 1, 2, ... (max. number - 1)
Seconds
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
Synchronized actions