IO-Link Master with EtherCAT Interface DataLine 8 Ports IP 65 / IP 66 / IP 67
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Principle of the acacylic command processing
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General processing of acyclic communication:
1 Write command request
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In the command buffer (0x310n:sub-index 0x01): write required request data.
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Request data is transmitted.
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Command processing is initiated.
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Request channel is locked.
2 Check status
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In the status byte (0x310n:sub-index 0x02): read status information.
If status == 0xFF: command processing is pending, repeat step 2.
If status < 0xFF: command processing is finished, continue with step 3.
3 Read command response
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In the response buffer (0x310n:sub-index 0x03): read response data.
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The request channel is unlocked.
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Next command processing can be initiated.
The AL1332 can only process one CoE request at a time. If during an active request another
CoE request is started, the device answers with an error (SDO abort code: 0x06090030).