ABB S800 I/O Manual page 47

Section 3 Configuration
•
•
Check that MemSize is less than or equal to 2048. If not, the configuration can
not be used.
Data with * are valid for CI830 firmware 1.0 to 1.2.
Data inside parenthesis ( ) are valid for CI830 firmware version 1.3 or higher.
User
Module
Paramete
Type
rs
CI830 3
AI801 7
AI810 11
AI820 7
AI825 7
AI830/ 11
AI830A
AI835/AI83 13
5A
AI890 7
AI893 13
AO801 16
3BSE020926-600
Round up the values InSize, OutSize and the sum of ParamSize+15 to the
nearest multiple of eight (8), for example, 233 is rounded to 240.
Finally calculate the memory size with the formula:
MemSize =a + 2xRoundParamSize + 3x(RoundInSize +RoundOutSize).
a=656 for firmware release 1.0 and 1.1.
a=728 for firmware release 1.2 or later.
Table 11. Calculation of Number of Modules on CI830
Input Output
Bytes
4
20
20
12
12
20
20
20
20
4
Number
of
Bytes
Modules
0 1
4
4
4
4
4
4
4
4
18
CI830 Configuration Rules
Sum
Sum
User
Input
Para-
Bytes
meters
3 4
Sum
Output
Bytes
0
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