Siemens ISI EN 50295 - Manual (Page 5)

Siemens IK PI · 2004 6/5
AS-Interface
Introduction
Technical specifications
6
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Technical specifications
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More information
Please note the operating framework conditions in each case for
the specified SIMATIC NET products (Order No. 6GK..., 6XV1...),
which you will find on the Internet page listed below.
Additional information is available in the Internet under:
http://www.siemens.de/simatic-net/ik-info
Standard EN 50295
Topology Bus, star or tree topology
(like electrical installation)
Transmission medium Unshielded two-wire cable
(2 x 1.5 mm
2
) for data and
auxiliary power
Connection method Contacting of the AS-Interface
cable using the insulation
displacement method
Permissible cable length max. 100 m w/o repeater/extender
500 m range with repeater/
extender (parallel connection
of repeaters)
Cycle time max. 5 ms with full expansion,
10 ms using A/B method
Number of stations max. 31 slaves accord. to Complete
AS-Interface Spec. V2.0 ;
62 slaves accord. to Complete
AS-Interface Spec. V2.1
(A/B method),
integrated analog value
transmission
Number of binary
sensors/actuators Max. 124 I/124 O
modules according to spec. V2.0;
Max. 248 I/186 O
modules according to spec. V2.1
Access procedure Cyclical master-slave polling
method, cyclical acceptance
by host (PLC, PC)
Error correction Identification and repetition of
faulty messages