Lenze DDS v2.3 Manual do Utilizador descarregar pdf (Página 197)

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8-7

DDS EN 2.3

8.3.1 System codes/User codes

There are system codes and user codes.

System codes

System codes are default codes ”hard-wired” into thePLC and can thus be used to parameterizethe

PLC with the help of parameterization tools such as GDC or keypad.

• These codes help set the monitor type, the constant of the speed controller, the feedback

system, the field bus, the terminal polarity, etc. for the 9300 Servo PLC, for example.

• The parameters for these codes can be set

online

on the PLC with the parameter monitor and

saved with C0003=1 in the parameter set of the PLC.

User codes

User codes are created in the Instance Parameter Manager and have a fixed link with a program

variable.

• These codes can be used to access variables in the PLC program via field bus profiles,

parameterization programs and display and operating tools.

Grouping of codes

• The folder Code list contains all codes: The system codes of the selected PLC and the user

codes created in the project.

• The folder Individual IEC 61131 codes only contains the user codes created in the project.

• All other folders contain system codes of the selected PLC for the parameterization of a

specific functionality. The folder Multitasking contains all codes that can be used to

parameterize the multitasking behaviour of the PLC.

8.3.2 Parameterizing codes

Tip!

For code parameterization via the parameter monitor, the DDS must be connected

online

with the

PLC.

• Click the code to be changed to open a dialog box for the modification of the selected code.

8.3.3 Differentiating between online and offline mode

Offline mode

• displays those write code values that were written last by the DDS.

• displays the preset read code values (in general 0).

Online mode

• reads the code values visible in the parameter monitor permanently from the PLC and displays

them. Codes whose values have not been read from the PLC yet are shown in green.

• will not save any value changes to write-accessible codes made during a mains off. Only with

“Save parameter set” (C0003=1) will the changed values be saved in the PLC’s parameter set

and made available after mains switching.

The monitoring of variables is restricted while the parameter monitor is open.

Variables may only be updated slowly or not at all.

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