Introduction to STEP 5 S5-95F
Block Structure
Each block consists of the following parts.
• Block header specifying the block type, number, and length.
The programmer generates the block header when it transforms the block.
• Block body with the STEP 5 program or data.
Figure 7-3. Structure of a Block Header
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Synchronization
pattern
Block type
Block number
Programmer ID
Library number
Block length
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Programming
Program your blocks as follows (does not apply to data blocks).
1. Specify the block type (e.g., PB).
2. Specify the block number (e.g., 27).
3. Enter the control program statements.
4. Terminate the block with the ”BE” statement.
7-8
EWA 4NEB 812 6210-02
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