Technical data

AS-Interface (AS-i)
1-5
SIMATIC NET AS-Interface – Introduction and Basic Information
C79000-G8976-C089/03
1.2.1 AS-i Masters
Siemens currently produces the following AS-i masters:
S Standard AS-i Master
Up to 31 standard slaves or slaves with the extended addressing mode (A
slaves only) can be attached to standard AS-i masters.
for System Standard AS-i master
SIMATIC S5 PLC: CP 2433 for S5-90U, S5-95U, S5-100U,
CP 2430 for S5-115U, S5-135U, S5-155U
SIMATIC S7 PLC: CP 242-2 for S7-200
CP 242-8 for S7-200
CP 342-2 for S7-300
SIMATIC C7: C7-621 ASi
Distributed I/Os: DP/AS-Interface Link 20 (type of protection IP 20)
CP 242-8 for S7-200
CP 2433 for ET 200U
CP 342-2 for ET 200M
CP 142-2 for ET 200X
DP/AS-Interface Link (type of protection IP 65)
IBM-compatible PCs: CP 2413 for PC-AT
S Extended AS-i Masters
– Addressing mode
The extended AS-i masters support 31 addresses that can be used for
standard AS-i slaves or AS-i slaves with the extended addressing mode.
AS-i slaves with the extended addressing mode can be connected in pairs
(programmed as A or B slaves) to an extended AS-i master and can use the
same address. This increases the number of addressable AS-i slaves to a
maximum of 62.
Due to the address expansion, the number of binary outputs is reduced to
three per AS-i slave on slaves using the extended addressing mode.
– Integrated analog value transfer for AS-i slaves complying with profile
7.3/7.4
The extended AS-i masters of SIMATIC NET support the integrated transfer
of AS-Interface analog slaves that operate in compliance with profile 7.3/7.4
of the AS-Interface specification. Analog slaves operating with this profile
can be addressed extremely simply by the user program.