Control Data Record For The Et 200Al Distributed I/O System - Siemens SIMATIC ET 200AL System Manual

Rules
Observe the following rules:
● Slot entries in the control data record outside the station master are ignored by the
interface module.
● The control data record must contain the entries up to the last slot of the station option.
● Each slot of a station option may only be present once in the control data record.
● Each slot of a station option may only be assigned to one slot in the station master.
● The interface module (slot 0) is not an element of the configuration control, but instead
controls this.
● The topology modules always have to exist in the data record:
– The topology module ET-Connection 1 is always located on Slot 1.
– The topology module ET-Connection 2 is always located on Slot 18.
7.3.2

Control data record for the ET 200AL distributed I/O system

Slot assignment
Note
Topology modules ET-Connetion1 and ET-Connection2
Both topology modules ET-Connection1 and ET-Connection2 should be treated like real
modules during configuration control.
Restriction: ET-Connetion1 is always placed in Slot 1 and ET-Connection2 is always placed
in Plot 18.
The following table shows the possible slots for the various modules for an
ET 200AL interface module:
Table 7- 1 Slot assignment
Modules
Topology ET-Connection1
I/O modules ET-Connection1
Topology module ET-
Connection2
I/O modules ET-Connection2
Distributed I/O system
System Manual, 08/2019, A5E31861578-AG
Possible slots Comment
1 The topology module ET-Connection 1 is always located on Slot 1.
2-17 -
18 The topology module ET-Connection2 is always located on Slot 18.
19-34 -
Configuration control (option handling)
7.3 Creating the control data record
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