System overview
1.10 Connection to the higher-level control
SIRIUS Innovations
98 System Manual, 01/2011, A8E56203870002-03
1.10.3.6 Technical data
Feature Specification
Standard EN 50295/IEC 61158
Topology Line topology, star topology, or tree topology
(same as electrical installation)
Transmission medium Unshielded twisted pair (2 x 1.5 mm
2
) for data
and auxiliary power
Connection system Contacting of the AS-Interface cable using
insulation displacement
Maximum cable length 100 m without repeater
200 m with extension plug
300 m with 2 repeaters connected in series
600 m with extension plugs and 2 repeaters
connected in parallel
With parallel connection, more repeaters allow for
longer cable lengths
Maximum cycle time 5 ms for maximum configuration with standard
addresses
10 ms for maximum configuration with A/B
addresses
Profile-specific for Spec 3.0 slaves
Number of stations per AS-Interface segment 31 slaves in accordance with AS-Interface Spec.
V2.0
62 slaves (A/B method) in accordance with AS-
Interface Spec. V2.1 and V3.0, integrated analog
value transmission
Number of binary sensors/actuators Max. 124 DI/124 DO acc. to Spec. V2.0
Max. 248 DI/186 DO acc. to Spec. V2.1
Max. 496 DI/496 DO acc. to Spec. V3.0
Access method Cyclic polling master/slave procedure, cyclic data
acceptance by host (PLC, PC)
Error control Identification and resending of faulty messages
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