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RSTi-OM User Manual
GFK-3212A
13.2
Event Handling
The IOLM event handling is designed to provide real-time updates of event codes received directly
from the IO-Link device. The IO-Link event code:
•
•
•
13.2.1
Clear Event After Hold Time Process
Figure 94: Illustrates clearing the event after the hold time process.
`
Functionality Descriptions
Is included in the second 16-bit word of the Input Process Data (PDI) block.
An active event is indicated by a non-zero value.
-
Inactive or no event is indicated by a zero value.
-
Two methods are provided to clear an event:
-
Enable the Clear Event After Hold Time option.
•
The IOLM keeps or holds, the active event code in the PDI block until the configured Active
Event Hold Time has passed.
•
The IOLM then clears the event code in the PDI block and waits until the Clear Event Hold
Time has passed before including another event code in the PDI block.
-
Enable the Clear Event In PDO Block option.
• The IOLM monitors the PDO block received from the PLC.
• The IOLM expects the first entry of the PDO block to indicate an event code to be
cleared.
• If there is an active event code in the PDI block and the PDO block both contain
the same event code, the event code is cleared in the PDI block.
• The IOLM then clears the event code in the PDI block and waits until the Clear Event
Hold Time has passed before including another event code in the PDI block.
The two methods can be used separately or together to control the clearing of events.
The next subsections illustrate the event clearing process for the various event
configurations.
Section 13
Jun 2021
133
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