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Digitax ST Advanced User Guide 155
Issue Number: 1 www.controltechniques.com
The Drive Onboard Application Lite Ladder Programming Events parameter holds the number of times a Onboard Application Lite Ladder program
download has taken place and is 0 on dispatch from the factory. If the Drive Onboard Application Lite Ladder Programming Events is greater than the
maximum value which may be represented by this parameter the value will be clipped to the maximum value. This parameter is not altered when
defaults are loaded.
This parameter is updated once per second or once per Onboard PLC program scan whichever is the longest. If more than one program scan occurs
within the one second update period the parameter shows the average scan time. If the program scan time is longer than one second the parameter
shows the time for the last program scan.
The Drive Onboard Application Lite Ladder Program first run parameter is set for the duration of the first ladder diagram scan from the ladder diagram
stopped state. This enables the user to perform any required initialisation every time the ladder diagram is run. This parameter is set every time the
ladder is stopped.
11.49 Drive Onboard Application Lite Ladder Programming Events
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111 11
Range 0 to 65,535
Update rate Background write
11.50 Drive Onboard Application Lite Ladder Program Average Scan Time
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
111 1
Range 0 to 65,535 ms
Update rate Onboard Application Lite Ladder program execution period
11.51 Drive Onboard Application Lite Ladder Program first run
Coding
Bit SP FI DE Txt VM DP ND RA NC NV PT US RW BU PS
1111
Range 0 or 1
Update rate Onboard Application Lite Ladder program execution period
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