TR-Electronic CDV582 - Preset Adjustment Function; Procedure

Parameterization and configuration
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6.6.3 Preset adjustment function
Risk of death, serious physical injury and/or damage to property if the
drive system starts uncontrolled while executing the Preset Adjustment
function!
 Execute the preset function only at standstill, see chapter Idleness
tolerance preset“ on Page 126
 The relevant drive systems must be locked to prevent automatic start-
up
 We recommend to protect triggering of the preset adjustment function
via the F Host by taking additional safety measures, such as key-
operated switch, password, etc.
 It is absolutely necessary to follow the operational sequence described
below, particularly to evaluate the status bits by means of the F Host,
in order to check whether the preset adjustment function has been
executed successfully or unsuccessfully
 The new position must be checked after execution of the preset
function
The preset adjustment function is used to set the currently output actual position value to any actual
position value within the scaled measuring range. This allows to electronically set the displayed
position to a machine reference position.
6.6.3.1 Procedure
 Requirement: The measuring system is in cyclical data exchange mode.
 Write the desired preset value into the registers Preset Multi-Turn and Preset Single-
Turn of the output data.
 The F Host must set the variable associated with control bit 2
0
iPar_EN to 1. As the edge rises,
the measuring system is switched to ready-to-receive.
 The preset value is applied when the edge of bit 2
0
Preset Request rises in the register
TR-Control1. Receipt of the preset value is acknowledged in the TR Status register by
setting the Preset_Status bit 2
0
.
 After receipt of the preset value, the measuring system checks whether all prerequisites for
execution of the preset adjustment function are fulfilled. If yes, the preset value is written as the
new actual position value. If no, execution is rejected and an error message is output via the TR
Status register by setting the Error bit 2
15
.
 After processing the preset adjustment function, the measuring system sets the variable
associated with iPar_OK status bit 2
0
to 1, thus signaling to the F Host that execution of the
preset adjustment function has been completed.
 The F Host must then reset the variable associated with the iPar_EN control bit 2
0
to 0. A falling
edge means that the variable associated with the iPar_OK status bit 2
0
and the
Preset_Status bit 2
0
are reset in the TR Status register. The Preset Request bit 2
0
in the
TR-Control1 register must be reset manually.
 Finally, the F Host must check that the new position corresponds to the new command position.