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Preset Adjustment Function
10.1 Procedure
‣ Prerequisite: The measuring system is in cyclical data exchange.
‣ Write the Preset Multi-Turn and Preset Single-Turn registers in the
output data of the TR-PROFIsafe module with the desired preset value.
‣ The F-Host must set the variable IPAR_EN in the F-Periphery-DB to 1. With the
rising edge, the measuring system is now switched ready to receive.
‣ With the rising edge of Bit 2 0 Preset_Request in the TR-Control1 register,
the preset value is accepted. The receipt of the preset value is acknowledged in
the TR-Status register by setting Bit 2 0 Preset_Status.
‣ After receipt of the preset value, the measuring system checks that all
prerequisites for execution of the preset adjustment function are fulfilled. If so, the
preset value is written as the new position value. In case of error, the execution is
rejected and an error message is output via the TR-Status register by setting
Bit 2 15 Error.
‣ After successful execution of the preset adjustment function, the measuring
system sets the variable iPar_OK = 1 in the F-Periphery-DB and thus indicates
to the F-Host that the preset execution is complete.
‣ The F-Host must now reset the variable IPAR_EN in the F-Periphery-DB to 0.
The variable iPar_OK and Bit 2 0 Preset_Status in the TR-Status register
are thus also reset with the falling edge. Bit 2 0 Preset_Request in the
TR-Control1 register must be reset manually again.
‣ Finally, the F-Host must check that the new position corresponds to the new
nominal position.
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Page 190 of 207 TR - ECE - BA - DGB - 0079 - 03 05/25/2011