SIEMENS
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Siemens IC 10 · 2017
AS-Interface
Introduction
System components
2
■
Overview
To implement communication, the following components of a
system installation are available:
•
AS-i modules for central control units such as SIMATIC S7,
ET 200M/ET 200SP distributed peripherals, or network
transitions from PROFIBUS or PROFINET to AS-Interface
•
Power supply unit, if required in combination with a data
decoupling module for the power supply to the slaves
•
AS-Interface shaped cables
•
Network components such as repeaters and extension plugs
(cannot be used for AS-i Power24V)
•
I/O modules (AS-i slaves) for connection of standard
sensors/actuators
•
Actuators and sensors with integrated AS-i slave
•
Safe I/O modules (ASIsafe slaves) for transmitting
safety-related data through AS-Interface
•
Addressing device for setting slave addresses during
commissioning
Example of a configuration with the system components
Features
24 V DC
power
supply
AS-Interface
power supply
AS-Interface
power supply
Digital and analog
K20, K45, K60 field modules
3RA2 load
feeders
SIRIUS M200D
motor starters
Load feeders
with safe
AS-i outputs
Safe
EMERGENCY-STOP
and field module
Signaling
columns
Pushbuttons
Indicator lights
Safe and standard control cabinet
modules SC17.5F and SC22.5
S7-1200 with CM 1243-2
MSS
ASIsafe
MSS
Advanced
Safety switch
without
tumbler
with
tumbler
S7-1200 with CM 1243-2
CM AS-i Master ST and
F-CM AS-i Safety ST
for SIMATIC ET 200SP
CM AS-i Master ST and
F-CM AS-i Safety ST
for SIMATIC ET 200SP
Inverters G110M
Inverters G110D
SIMATIC/
SIMOTION
PROFINET
AS-Interface
Industrial Ethernet
PROFIBUS DP
IK10_20027m
SINUMERIK
S7-300 CP 343-2(P)
DP/AS-i LINK Advanced
IE/AS-i LINK PN IO
DP/AS-i Link 20E
S7-300 CP 343-2(P)
AS-Interface
MSS
Advanced
MSS
ASIsafe
Standard
EN 50295 / IEC 62026-2
Topology
Line, star or tree structure
(same as electrical wiring)
Transmission medium
Unshielded two-wire cable (2 x 1.5 mm
2
)
for data and auxiliary power
Connection methods
Contacting of the AS-Interface cable by insulation
piercing method
Maximum cable length
• 100 m without repeater
• 200 m with extension plug
• 300 m with two repeaters in series connection
• 600 m with extension plugs and two repeaters in
parallel connection
Longer cable lengths are also possible when
additional repeaters are connected in parallel
Maximum cycle time
• 5 ms in maximum configuration
with 31 standard addresses
• 10 ms in maximum configuration
with 62 A/B addresses
• Profile-specific for slaves with extended data,
e.g. analog slaves
Number of stations
per AS-Interface line
• Up to 62 Slaves (A/B technology)
• Integrated analog value transmission
Number of binary
sensors/actuators
Max. 496 DI/496 DQ
Access control
• Cyclic polling master/slave procedure
• Cyclic data acceptance from host (PLC, PC)
Error safeguard
Identification and repetition of faulty message
frames
© Siemens AG 2016