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ifm
Programming Manual BasicController relay CR0431 v03.03.00
05 / 2018
ifm function elements
ifm function elements for the device CR0431
CANOPEN_SDOREADBLOCK
14942
= SDO Read Block
Unit type = function block (FB)
Unit is contained in the library
ifm_CANopen_NT_Vxxyyzz.LIB
Symbol in CODESYS:
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Description
14943
CANOPEN_SDOREADBLOCK reads the indicated entry in the object directory of a node in the
network via SDO block transfer.
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If the node doesn't support block transfer, the FB automatically changes to "segmented transfer".
You can also directly change to "segmented transfer" via the input.
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The COB ID for the SDO is calculated from the transmitted node ID.
The length of multiframe SDOs is generally not limited.
For systems without a file system (e.g. BasicController CR04nn) the following applies:
► transmit an address to the FB which is accessed by the pointer for writing. The memory area
determined by the start address DATA and the amount of data MAX_LEN must be available!
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If the amount of data is greater than indicated, the transfer is stopped and signalled via RESULT.
For systems with a file system (e.g. PDM360NG CR108n) the following applies:
► transmit the path and name of a file to the FB, in which the data is to be saved in binary format.
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The output RESULT provides information on the status of the SDO transmission.
Summary of Contents for BasicController CR0431
Page 228: ...228 10 Notizen Notes Notes...
