Commissioning / Operation / Maintenance AddFEM
5-44
AddFEM
C79000–G8076–C900–03
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
Mean runtime
0
Approx. 2 ms (CPU 416–2DP)
1
Approx. 3 ms (CPU 417 H)
2
Approx. 2.5 ms (CPU 416–2DP)
3
Approx. 4 ms (CPU 417 H)
5.5.6 Required Memory Space
Basic Memory Requirement per AS:
Block
Download memory Working memory
FEM_AI (FB200) 10526 bytes 9700 bytes
FEM_DI (FB201) 1756 bytes 1326 bytes
FEM_DO (FB202) 1672 bytes 1302 bytes
FEM_AO (FB203) 6758 bytes 5924 bytes
Memory Requirement per Instance:
Block
Download memory Working memory
Instance DB of FEM_AI
(FB200)
1548 bytes 716 bytes
Instance DB of FEM_DI
(FB201)
546 bytes 150 bytes
Instance DB of FEM_DO
(FB202)
482 bytes 146 bytes
Instance DB of FEM_AO
(FB203)
900 bytes 400 bytes
Per OB call 100 bytes 60 bytes
Per FC at CFC 150 bytes 100 bytes
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