This Method starts the latch capture function of the represented probe. The security constraints defined in chapter 6.6 apply.
Signature
LatchStart (
);
The Method Result Codes (defined in Call Service) are defined in Table 15.
Table 21 – Possible Method Result Codes
|
Result Code |
Description |
|
Good |
The Method execution was successful. |
|
Bad_UserAccessDenied |
The user has not the right to execute the Method. |
|
Bad_Locked |
The EncoderProbeType Object is locked by a different Client’s Session. |
|
Bad_RequiresLock |
The EncoderProbeType Object is not locked. Clients must lock the EncoderProbeType Object before invoking a Method. |
|
Bad_UnexpectedError |
The server is not able to execute the function because an unexpected error occurred. The Device might be temporarily unavailable or unreachable due to network failure. |
The LatchActive Variable contains True if the represented probe’s latch is active, otherwise False.
The LastLatchedPos Variable contains the last latched position of the probe.
The Server might provide the Client with information about changes of the probe’s latch data by sending EncoderProbeLatchEventType Events.