Beckhoff EL3182, Документация

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HART
EL3182 118 Version: 1.2
6 HART
Note to HART Plug In
The HART Plug In is available since TwinCAT 3.1 Build 4022.
Please contact Beckhoff Support [
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141] for support in older TwinCAT Versions.
6.1 Setting
Use the "HART Settings" dialog to set the master properties.
After the corresponding channel selection, the following parameters can be changed.
• PreambleLength Length of the master preamble. If this is set to "Automatic Assign", the master
automatically communicates with the minimum supported length of the connected HART slave.
• MasterMode Selection of primary or secondary master mode.
• DefaultPollingAddress A slave must be polled via Cmd0 in order to be able to form a unique address
via the obtained information. Sets the address through which Cmd0 is polled (possible range: 0..63).
• PollingTime If a cyclic HART communication is enabled, this value specifies the cycle time.
• MaxRetrys If a HART request was not answered correctly, this indicates the maximum number of
repeat cycles.
The settings have to be confirmed with the button "Write to Actual Channel..." before they become active and
are saved, if required.
Use "Set to Default..." to switch back to the default values.
The button "Scan Polling Address..." enables the connected HART device to be scanned and therefore the
polling address that was used to be found. The scanning range is 0 to 63. The scan is aborted once a device
has responded. The address that was found can be included in the project.
6.2 Slave Information
The "Slave Information" dialog can be used to read and write general information from and to the connected
slave.