Siemens ISI EN 50295 Brochure page 5

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Technical specifications
Standard
Topology
Transmission medium
Connection method
Permissible cable length max.
Cycle time max.
Number of stations max.
Number of binary
sensors/actuators
Access procedure
Error correction
EN 50295
Bus, star or tree topology
(like electrical installation)
Unshielded two-wire cable
2
(2 x 1.5 mm ) for data and
auxiliary power
Contacting of the AS-Interface
cable using the insulation
displacement method
100 m w/o repeater/extender
500 m range with repeater/
extender (parallel connection
of repeaters)
5 ms with full expansion,
10 ms using A/B method
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
Max. 124 I/124 O
modules according to spec. V2.0;
Max. 248 I/186 O
modules according to spec. V2.1
Cyclical master-slave polling
method, cyclical acceptance
by host (PLC, PC)
Identification and repetition of
faulty messages
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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
AS-Interface
Introduction
Technical specifications
Siemens IK PI · 2004 6/5
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