Time Requirements - Siemens SIMATIC S5 Equipment Manual

R 02/92

Time Requirements

8.3
1. Power On
The SP bit appears after turn-on or return of thevoltagetothe control. After approx. 100 psecthe
SP bit can be scanned by the S5 unit. Its status is "l" until the module is ready to permit write
commands (memory initialization). Now the module can be parameterized (i.e., the initial and end
When operating with standard function blocks, this is automatically considered.
2. Parameter Assignment
For the transmission of a setpoint, the 1P 241 processor requires
For channel 1 with 4 cams set and channel 2 with eight cams set, the total time
Example:
required is 12x 2 x 8 msec = 192 msec.
This means, the total time required for parameterization of
8 msec x 32 setpoints (initial value)
8 msec x 32 setpoints (end value)
3. Processing Time
The processing times in this section refer to a comparison of the setpoint with
the actual value.
If identical setpoints are used for several tracks, the matching number of com–
parisons is required.
3.1 Encoder Matching Module (Incremental)
Typical processing time per setpoint/actual value comparison
3.2 Encoder Matching Module Absolute 1 (Excess–3 Gray)
Typical processing time per setpoint/actual value comparison
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Technical Specifications
8 msec
= 256 msec
Total time Z = 512 msec
8 – 3