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COMMISSIONING / OPERATION
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H250 M40 ESK4
www.krohne.com
03/2014 - 4002251801 - AD H250/M40 PROFIBUS R01 en
4.3 Ident. Number selector
Within a PROFIBUS network the type of a PROFIBUS slave is identified by its Ident. Number
which is unique for this slave type. The ESK4-PA transmitter supports different Ident. Numbers.
Therefore it can be installed for different use cases. When the Ident. Number is changed the
behaviour of the device concerning the cyclic data transfer is changed; i.e. the maximum number
of transferred measuring values and/or the length and content of the diagnosis information will
be different. The user can select the required Ident. Number by an engineering tool (e.g.
DD/DTM). The Ident. Number is set via the parameter IDENT_NUMBER_SELECTOR.
The following settings are supported by the ESK4-PA transmitter:
•
Automatic adaptation mode (factory setting)
•
Manufacturer specific Ident. Number (4531hex)
•
Profile specific Ident. Number (9740hex)
•
Profile specific Ident. Number (9700hex)
•
Compatibility mode (ESK3-PA: F201hex)
•
Compatibility mode (Profile: 9740hex)
Automatic adaptation mode (factory setting)
Automatic adaptation mode (factory setting)
Automatic adaptation mode (factory setting)
Automatic adaptation mode (factory setting)
If the parameter IDENT_NUMBER_SELECTOR is set to this mode the device will select its
operation mode during start-up of the cyclic data transfer according to the used GSD file. The
active Ident. Number is set to one of the settings described below. If the
IDENT_NUMBER_SELECTOR is changed to this mode the current Ident. Number is not changed
until the cyclic data transfer is (re-)started.
INFORMATION!
Depending on the components in the PROFIBUS network the automatic adaptation might fail.
The active Ident. Number has to be selected by the user via an engineering tool in this case. The
parameter IDENT_NUMBER_SELECTOR has to be set to a fixed Ident. Number.
AD_H250_M40_PB_PA_R01_en_4002251801_PRT.book Page 12 Friday, March 21, 2014 1:14 PM
