User's Manual
Siemens PLT 111 · 1999
7/3
Coupling with other systems
SIMATIC S5 expansion units
Parallel coupling with S5-115U I/O modules
Fig. 7/1 Coupling of automation systems with SIMATIC S5-115U I/O
modules, fitted in ER 701 subrack for expansion units
Parallel coupling with SIMATIC S5-115U I/O modules
The SIMATIC S5-115U 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 operation on
AS 235 automation systems.
The following are required to couple the AS 235 automation sys-
tems to SIMATIC S5-115U I/O modules in the ER 701 subrack for
extension units:
• Interface module for
SIMATIC S5 expansion units 6DS1 321-8AA
• Connecting cable 721 6ES5 721-0..
• CC/EU interface module IM 310 6ES5 310-3AB11
with adapter cas
ing 6ES5 491-0LB11
• Terminator 6ES5 760-0AA11
An ER 701 subrack can be directly connected via each of the
two channels of interface module 6DS1 321-8AA. Further central
or distributed expansion units can be connected to this (see Cat-
alog ST 50). The number of SIMATIC S5 I/O modules which can
be coupled to an interface module is limited, however, by the
maximum addressing volume of 2 x 256 bytes (256 bytes per
channel).
Notes:
• An ER 701-3 subrack
cannot
be used instead of the ER 701-2.
• The first half of the address area of each channel of the inter-
face module (128 bytes) is reserved for digital inputs and out-
puts and must not be used for analog inputs and outputs.
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Max. 2.5 m
(central coupling)
ER 701-1 ER 701-1
ER 701-2ER 701-2
Connecting cable
721-0
AS 235,
AS 235 H,
AS 235 K,
ES 100 K
I/O bus
Interface module
6DS1 321-8AA
Channel 1
Connecting cable
721-0
Channel 2
Max. 500 m (distributed coupling)
CC/EU
interface module
IM 310
Terminator
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 I/O modules. The CC/EU interface module IM 310 is
used for the coupling at the SIMATIC end. This is inserted into
slot 7 of the ER 701-2 subrack for extension units.
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 A
S 235
automation system and the SIMATIC S5-115U I/O models is han-
dled 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.
This catalog is out of date, see note on page 1