Function Block Fb157(Per:wst); Function Description - Siemens SIMATIC S5 Equipment Manual
Digital position decoder ip 241 with fb 156/1 57 158
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Also See for SIMATIC S5:
- Manual (396 pages) ,
- Operating instructions manual (43 pages) ,
- Instructions manual (40 pages)
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Programming Instructions
Function Block FB 157 (PER:WST)
9.3
9.3.1 Function Description
With the function block "control position decoder", the following functions can be performed:
– Read actual values
– Read track identifier bits
– Read, delete or modify track setpoints
– Synchronize
– Special functions
The function block is usually called in the cyclic program. Prior to calling this function block, the
module with the function block FB 156 (PER:WPA, parametrize position decoder) must be sup-
plied with the initial data.
For evaluation of the process alarms or interrupts, the function block PER:WST can be called in a
block of the interrupt–controlled processing (OB 2 to 06 9).
Function
Controlling the module "digital position decoder 1P 241"
9 – 14
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