ABB S900 - CI920 Variants and Behavior; CI920 Variants Overview; System Behavior: Cold Start and Re-configuration

I/O System S900
Communication Interface for PROFIBUS DP, CI920
3BDD010422R0101 23
Variants
Table 4-2 Overview of S900 Communication interfaces
Order
No.
Type* Supported
in mode
Description
CI920 CIPB
1, 2 Communication interface, PROFIBUS DP V1
CI920 CIPB C
2 Communication interface, PROFIBUS DPV1,
with cyclic data
CI920 CIPB D
1 Communication interface, PROFIBUS DPV1,
with hidden diagnostics feature
CI920 CIPB CD
1 Communication interface, PROFIBUS DPV1,
with cyclic data and hidden diagnostics feature
CIPB
This variant has to be chosen generally. Both parameterization modes and
redundancy are supported.
CIPB C
The Communication Interface itself sends cyclic datIa. This variant can be
selected to enhance the diagnostics of the redundant PROFIBUS line (see
chapter redundancy further details).
CIPB D
With this variant in parameterization mode 1 single channels can be
deactivated to suppress diagnostic messages result from unused channlels.
CIPB CD
Combination from CIBP C and CIPB D available in mode 1.
Behavior
Cold start
The S900 interprets the Check_Cfg telegram sent by the master as the set
configuration. If the telegram is free of error, it is acknowledged with a