Function For The Current Block Display - Siemens sinumerik 840d sl Configuration Manual

9.3

Function for the current block display

The PrepareActualNCBlockForDisplay function is used to monitor the execution of the
traversing blocks of an NC traversing program on the HMI device. This function is used to
save the current, previous and next traversing block of an NC part program currently being
processed in a channel from the NC to local variables.
Procedure on the HMI device
● The PrepareActualNCBlockForDisplay function starts when a screen is opened.
● A non-configured NC tag block is activated with the configured cycle.
● On each cyclic reading operation of the NC tag block, the tag block is divided into three
parts and stored in the local tags of the previous, current and subsequent set.
● The local variables can be displayed on the screen as outputs.
Procedure
1. Select the function in the screen editor for "Select screen" (the screen is selected) from
"Events > Structured > Add function" in the "SINUMERIK" directory.
Figure 9-2
2. Specify three local tags of type String of length 66.
3. Within a screen, create three output fields each with one of these tags.
SINUMERIK Integrate Create MyHMI / WinCC V13 SP1
Configuration Manual, 11/2014
Current block display
Configuring PI services of the NC as system functions
9.3 Function for the current block display
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