Programming Guidelines For Tia - Danfoss VLT ISD 510 Operating Manual

VLT® Servo Drive System ISD 510/DSD 510
Operating Guide
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16. In operation block Synchronous Cycle [OB61], enter the telegram write instructions as per the example below.
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6.16 Programming Guidelines for TIA

Recommendations for implementation:
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Only assign the HwIdSubmodule variable in the appropriate structure of each device present at the beginning of the program.
Use the constant that is created automatically by TIA in menu [PLC tags → Show all tags → System Constants], for example,
danfoss-isd-01~Device_object_1~Module_access_point. Only assign this variable in the 1st PLC cycle for initialization. The struc-
tures to be used for each type of device are:
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ISD 510: AXIS_REF_DDS
- DSD 510: AXIS_REF_DDS
- PSM 510: PSM_REF
- DAM 510: DAM_REF
- ACM 510: ACM_REF
• Initialize parameters that usually do not change only once at the beginning of the program.
• Call the appropriate functions for each device present in every PLC cycle:
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ISD 510: DD_UpdateProcessInput_DDS and DD_UpdateProcessOutput_DDS
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DSD 510: DD_UpdateProcessInput_DDS and DD_UpdateProcessOutput_DDS
- SDM 511/SDM 512: DD_UpdateProcessInput_DDS and DD_UpdateProcessOutput_DDS
- PSM 510: DD_UpdateProcessInput_PSM and DD_UpdateProcessOutput_PSM
- DAM 510: DD_UpdateProcessInput_DAM and DD_UpdateProcessOutput_DAM
- ACM 510: DD_UpdateProcessInput_ACM and DD_UpdateProcessOutput_ACM
• Only create instructions and other program parts between calling up function blocks DD_UpdateProcessInput_xxx and DD_Up-
dateProcessOutput_xxx.
• Call up function blocks that provide status or error information with Enable input at the beginning of the program.
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Commissioning
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