Value Read
The logic element Value Read performs an active value read request and sends the result in case of success. It is meant for additional reads during regular operation. You do not need this element if you only want to ensure that the LOGIKEDITOR fetches the value from a device at start up. In this case, you can use Different data point initialization in a Value Input instead.
Contents
Inputs and Outputs
Inputs
GATE (see Logic Elements | Datapoint-Gate)
TRIGGER
Any input signal triggers the read request
Outputs
STATUS (0-5)
The status is sent only when it changes0: Initial status - No event occurred yet
1: OK - Request was successful
2: Request timed out - No answer received within 10 seconds
3: Read request was dismissed. the request queue is full (see below)
4: Request Error
5: The data point could not (yet) be loaded
Additional outputs depending on the data point type (see Value Input/Output)
The answer to a value read request is also received by all Value Inputs that use the same datapoint. You should therefore only evaluate the value at the outputs of this element if you want to execute certain additional functionalities exclusively for responses to triggered value read requests.
Configuration
Choose or create a data point. For further information see Value Input/Output or Data Points
Please note that the LOGIKEDITOR only processes one value read request per second. Additional requests will be queued. If the queue exceeds 100 requests, all further requests will be dismissed.
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