User's Manual

Siemens PLT 111 · 1999
7/5
Coupling with other systems
SIMATIC S5 expansion units
Parallel coupling with
S5-135U/155U I/O modules
Fig. 7/2 Coupling of automation systems with SIMATIC S5-135U/155U
I/O modules, fitted in SIMATIC S5 expansion units
Parallel coupling with
SIMATIC S5-135U/155U I/O modules
The SIMATIC S5-135U/155U I/O modules provide the user of the
TELEPERM M process control system with a further comprehen-
sive range of I/O modules for optimizing the field connections.
Of major advantage is that signal voltages up to 250 V can be
used with these I/O modules, and that the coupling level other-
wise required with TELEPERM M can be omitted. However, intel-
ligent SIMATIC S5 I/O modules are not suitable for coupling with
TELEPERM M.
The following are required to couple the AS 235 automation sys-
tems to SIMATIC S5 I/O modules of compact design in EU 183U
expansion units:
• Interface module for
SIMATIC S5 expansion units 6DS1321-8AA
• Connecting cable 721 6ES5 721-0..
• CC/EU interface module IM 310 6ES5 310-3AB11
• Terminator 6ES5 760-0AA11
An EU 183U expansion unit can be directly connected via each
of the two channels of interface module 6DS
1 321-8AA. Further
EU 183U expansion units can be connected to this either cen-
trally or distributed. EU 184U and EU 187U expansion units can
only be connected centralized (see Catalog ST 50). The number
of SIMATIC S5 I/O modules which can be coupled to an inter-
face module is limited, however, by the maximum addressing
volume of 2 x 256 bytes (256 bytes per channel).
Note:
An EU 185U or EU 186U expansion unit cannot be used instead
of the EU 183U. The EU 185U / EU 186U are only partially suit-
able for coupling. They can only be used if they are directly oper-
ated as the only unit without central expansion.
All connecting cables 721-0
AS 235,
AS 235 H,
AS 235 K,
ES 100 K
I/O bus
Interface module
6DS1 321-8AA
Channel 1
Channel 2
Max. 500 m (distributed coupling)
EU 183U
EU 183U
EU 183U EU 183U
EU 184U
EU 187U
EU 184U
EU 187U
Central coupling
Max. total cable length 2 m
Connecting cable 721-0
Terminator
CC/EU-AS 310
CC-AS
IM 300-5
CC-AS
IM 312-5
CC-AS
IM 312-5
CC-AS
IM 300-3
CC-AS
IM 312-3
CC-AS
IM 312-3
CC/EU-AS 310
Up to 6 interface modules 6DS1321-8AA with a total of 12 usable
channels can be operated per AS 235 automation system.
The interface module can be inserted into any slot for I/O mod-
ules of an AS 235 automation system or ES 100 K extension sys-
tem.
The module has two bit-parallel RS 422 interfaces via which
direct access (without intermediate storage) is possible to the
SIMATIC S5-135U/155U I/O modules. The CC/EU interface
module IM 310 is used for the coupling at the SIMATIC end.
This is inserted into slot 3 of the EU 183U expansion unit.
The maximum distance between the interface module
6DS1 321-8AA and the last expansion unit is 500 m with a dis-
tributed coupling.
Data transfer between the central processing unit of an AS 235
automation system and the SIMATIC S5-135U/155U I/O mod-
ules is handled by the driver blocks AA and AE for analog values
and the drivers A110 and E 110 for binary values.
The maximum permissible difference in the
M potential between
the AS 235 automation system and the expansion unit is 7 V.
See page 7/7 for interface module 6DS1 321-8AA.
EU SIMATIC S5 expansion unit
EU-IM Expansion unit interface module
CC-IM Central controller interface module
This catalog is out of date, see note on page 1