Processing Times For Driver Function Blocks; Required Memory Space - Siemens Add 7 AddFEM Manual

Commissioning / Operation / Maintenance
5.5.5

Processing Times for Driver Function Blocks

The driver function blocks for AddFEM require the following processing times, de-
pending on the CPU used and on the redundancy operating mode.
Operating
mode
0
1
2
3
5.5.6

Required Memory Space

Basic Memory Requirement per AS:
Block
FEM_AI (FB200)
FEM_DI (FB201)
FEM_DO (FB202)
FEM_AO (FB203)
Memory Requirement per Instance:
Block
Instance DB of FEM_AI
(FB200)
Instance DB of FEM_DI
(FB201)
Instance DB of FEM_DO
(FB202)
Instance DB of FEM_AO
(FB203)
Per OB call
Per FC at CFC
5-44
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Mean runtime
Approx. 2 ms (CPU 416–2DP)
Approx. 3 ms (CPU 417 H)
Approx. 2.5 ms (CPU 416–2DP)
Approx. 4 ms (CPU 417 H)
Download memory
10526 bytes
1756 bytes
1672 bytes
6758 bytes
Download memory
1548 bytes
546 bytes
482 bytes
900 bytes
100 bytes
150 bytes
AddFEM
Working memory
9700 bytes
1326 bytes
1302 bytes
5924 bytes
Working memory
716 bytes
150 bytes
146 bytes
400 bytes
60 bytes
100 bytes
AddFEM
C79000–G8076–C900–03