Siemens Simotion A4027118-A0414 - Manual (Page 88)

Section D: Program description
Description of important program elements
Flying Saw with SIMOTION A4027118-A0414
V 1.4 Release 06/06/08 88/107
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10 Description of important program elements
10.1 Program structure
The core functions of the standard “flying saw” application are sub-divided
into two sections
• Declaration section
• Instruction section
All of the interfaces, constants, instance data and multi-instance of the
function blocks called from the block are described in the Declaration
section
. Er besteht aus der Unit FS_Var.
All program instructions of the code that can be run are provided in the
Instruction section . This Section is sub-divided into four units.
• FS_TEMPL with the "FlyingSaw FB“.
• FS_PMIPO with the print mark sensing and the ipo-synchronous
functions.
• FS_SPB with the FBs to manage the synchronous positions in the
SyncPo buffer
10.2 Declaration part FS_Var
The structure of all of the data required for the FlyingSaw FB is saved in the
unit FS_Var. Instances will be the data in the user unit SAP_Var. When
required, in this unit, this data area can also be instantiated several times
so that the FlySaw FB can also be called for several flying saws within one
project.
Constants
• Axis
numbers
• Operating states of the flying saw
• Sequence phases of the parameter check
• Sequence phases of the automatic parameterization
• Sequence phases when changing from the “error” to “disable”
• Sequence phases when changing from the “error” to “disable” state
• Sequence phases when changing from the “disable” to “error”
• Sequence phases when changing from the “disable” to “starting
position”