Delta AX Series Instruction Manual page 442

AX- Ser i es Mo t i o n Co n t r o l l er I n s t r u c t i o n s Ma n u a l
AXIS_REF_DML (FB): All function blocks contain this variable, which works as the starting program for function blocks.
Function
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How to use MC_ReadParameter_DML to read the number of an EtherCAT object dictionary
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Use the SHL instruction to shift the data length of the object dictionary to be read to the left by 24 bits
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Use the SHL instruction to shift the index of the object dictionary to be read to the left by 8 bits
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Add up the above parameters and the sub-index.
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See the reference formula as follows.
diParameterNumber: = - DWORD_TO_DINT (SHL (TO_DWORD (object dictionary data length), 24) + SHL
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(TO_DWORD (object dictionary index), 8) + object sub-index);
To read an axis parameter, refer to the axis parameter AXIS_REF_DML (FB) and fill in its number in the
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diParameterNumber input parameter.
Troubleshooting
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When an error occurs in the execution of the instruction, bError will change to True. To confirm the current error state,
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see the Error Code in ErrorID.
Programming Example
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For the example, refer to the programming example of the MC_ReadParameter function block.
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For function block Axis parameters, enter that of the positioning axis.
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