System Specifications; Required System Components; Requirements On Plc / Ocs Master Systems - ABB S900 Manual

Required system components

The I/O System S900 in its smallest hardware configuration consists of the
following components:
1 x TU921
1 x SA910
1 x BP901
1 x CI920
1 x DX910
If required, a 230 V AC / 24 V DC power supply unit must be provided by the
customer to ensure 24 V DC power supply of the I/O System S900.

Requirements on PLC / OCS master systems

The I/O System S900 is designed for connection to all systems with a
PROFIBUS DP master.
The PROFIBUS DP (V0) services provide the following functionality:
•
Configuring/setting parameters of the S900 station upon re-start
•
S900 diagnostic messages
•
Reading HART secondary variables from connected field devices
•
Reading HART diagnostics from connected field devices through
PROFIBUS diagnostic messages.
To be able to use the full range of functions provided by the I/O System S900,
the master should support additional functions. Modern, state of the art master
systems support PROFIBUS DP V1 services and are capable of loading
configuration data and parameter settings while the system is running and
without affecting the slaves or requiring a network restart.
PROFIBUS DP V1 services allow you to:
•
monitor the input and output data
3BDD010422R0101
Communication Interface for PROFIBUS DP, CI920

3. System specifications

Termination unit
Power supply, 24VDC
Power supply filter
Communication interface
Digital I/O module
I/O System S900
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