Hex Parameterizing; Simatic Steps7 Blocks - Pepperl+Fuchs VBG-PB-K20-DMD-C1 Manual

As-interface/profibus-gateway

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12.2.4.3 Hex parameterizing

DPV1_Status

Hexadecimal representation of the data resulting from the settings for parameter

bytes 0 to 2.

User_Prm_Data

Hexadecimal representation of the data resulting from the settings for parameter

bytes 3 to 37.

12.2.5

After the hardware has been configured, these can be sent to the CPU. Since data

transmission of the AS-i data is done in this example directly to the process image,

no additional Step7 program is needed for data refreshing. Therefore there is no

program code in OB1.

OB1

Cyclical program block Access to the AS-i data is via the parameterized

address space in the in-/outputs process image.

OB82

PROFIBUS diagnostic alarm. This OB is invoked as soon as a PROFI-

BUS slave has set the ExtDiag flag in the telegram reply. This ExtDiag

flag allows a PROFIBUS slave to report an error condition to a PROFI-

BUS master. If OB82 is not present, the CPU is stopped when a PROFI-

BUS slave sets the ExtDiag flag.

OB86

PROFIBUS peripheral error. This OB is invoked when the PROFIBUS

master detects a PROFIBUS slave failure.

OB100 Startup OB. This OB is run once when the CPU starts up.

Subject to reasonable modifications due to technical advances.

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Appendix: Example for startup on a Siemens S7

AS-Interface

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