Siemens SIMATIC S5 Equipment Manual page 93

Matching Module 4 for Absolute Encoders
See the following table for the number of clock pulses (parameter TB).
Example: Encoder data: Resolution 128
An actual value is transferred with the following bits.
Leading zeros: 3
Multi–turn:
Single–turn: 7
A clock pulse group with 19 clock pulses is required.
7 – 2
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Data Word wilh 25 Bits
Bit Number in the Data Word
Multi–turn operation with 512 rotations
9
19 bits
R 02/92
1989, Order
No.: 6E.S5 gg8-0KD21
LSS