ABB S800 Product Manual page 130

PROFIBUS CI801
Table 25. Calculation of Number of Modules on CI801 (Continued)
Module User
Type Parameters
DO890 6
DP820 12
DP840 10
Standard 4
Drives
Total sum -
Calculation of Bus Cycle Time
How to calculate the Bus Cycle Time, see documentation for current master.
To calculate the Bus Cycle Time the following parameters for the I/O station shall
be used:
Number of input and output bytes. See
per Station
MAX T
See GSD file.
130
Input Output
Bytes Bytes
1 1
18 13
34 0
13 12
-
on page 126.
Maximum Station Delay of Responder in T
SDR
Section 3 Technical Data and Performance
Number
of User Para-
Modules
- ParamSize InSize
Calculation of Number of S800 I/O Modules
Sum Sum
Input
meters Bytes
(Bit Time). 
BIT
3BSE015969-600 A
Sum
Output
Bytes
OutSize