ABB S800 - Page 126

PROFIBUS CI801 Section 3 Technical Data and Performance
126 3BSE015969-600 A
Calculation of Number of S800 I/O Modules per Station
Due to the PROFIBUS-DP specification it is not possible to always connect 24
I/O modules to one FCI. This is because the S800 I/O system includes more data
and user parameters than PROFIBUS-DP can handle. Table 24 shows maximum
number of modules that can be connected to one CI801.
Table 24. Maximum Number of Modules on CI801
Module Type Number of Modules
AI801, AI810, AI830, AI830A, AI835,
AI835A, AI890, AI893, AI895
14 (11)
AI820, AI825 24 (22)
AI843 11 (9)
AI815, AI845 14 (11)
AO801, AO810, AO810V2, AO890,
AO895
7 (5)
AO820 14 (11)
AO815, AO845, AO845A 7 (5)
DI801, DI802, DI803, DI810, DI811,
DI820, DI821
24 (24)
DI818 24 (24)
DI828 24 (24)
DI840 16 (16)
DO801, DO810, DO814 22 (21)
DO818 13 (13)
DO802, DO815, DO820, DO821 24 (24)
DO828 22 (21)
DO840 20 (19)
DP820 8 (6)