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Functions
3.3 Option handling
Control data record
A control data record 196 containing a slot assignment is defined for option handling.
Table 3- 3
Byte
0
1
2
3
4
5
:
4 + max. slot - 1 Assignment of
Each element must contain the following information about the slot:
● Assignment of configured slot ⇔ real slot
● A slot can be qualified as a reserve module
Table 3- 4
Bit
0 ... 6
7
Special features
There are certain specific aspects of which you must be aware:
● Remanent storage of control data set in the interface module.
● Slot entries outside the target configuration are disregarded.
● This also applies to modules assigned to another IO controller in the shared device.
● The control data record can be reduced, but it must contain all entries up to the last slot
● Each real slot may exist only once in the data record.
Note
Changed options
Writing a control data record with changed options will lead to station failure followed by a
cold station restart with the changed options.
24
Control data record
Element
Block length
Block ID
Version
Version
Assignment of
configured slot 1
Assignment of
configured slot 2
:
configured
maximum slot
Control element coding
Meaning
0: Module not available (option handling without reserve modules)
1: Real slot (1 ... maximum slot)
1: RESERVE module permitted (only for option handling with RESERVE
modules)
of the current target configuration.
Coding
Explanation
4 + number of
Header
slots
196
1
0
Real slot 1
Describes which real slot in the device has
been assigned to the configured slot in each
element.
Real slot 2
Bit 7 = 1: indicates that a RESERVE module
is valid.
:
Real maximum
slot
Interface module IM151-3 PN HIGH FEATURE (6ES7151-3BA23-0AB0)
Manual, 08/2010, A5E01584258-04
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