Siemens SIMATIC ET 200S Manual page 544

D.2 Response times for the ET 200S
Calculating the response time as of IM151-1 BASIC, 6ES7151-1CA00-0AB0
The following formula enables you to make an approximate calculation of the
ET 200S response time:
Explanation of the parameters:
• m: Total number of all modules (power modules, digital electronic modules,
analog electronic modules, IQ-SENSE electronic modules, process-related
modules, and motor starters)
• do: Sum of all the digital output modules
• ai: Sum of all the analog input modules and 1SSI fast electronic modules
• ao: Sum of all the analog output modules
• t: Number of all process-related modules (except 1SSI fast)
Example of the calculation of the ET 200S response time as of IM151-1 BASIC
6ES7151-1CA00-0AB0
m = 12; do=2;
Response time = 156 · m +33 · do + 486 · ai + 374 · ao + 1633 · t + 934
Response time = 156 · 12 +33 · 2 + 486 · 1 + 374 · 1 + 1633 · 0 + 934
Response time = 3732 ms
Figure D-2
D-2
Response time [ms] = 156 · m +33 · do + 486 · ai + 374 · ao + 1633 · t + 934
1 2
ai=1; ao=1;
Example setup for calculating the response time in the case of the IM151-1
BASIC
Slot
3 4 5 6 7 8 9 10 11 12
t=0
ET 200S Distributed I/O System
EWA-4NEB780602402-09