Siemens SIMATIC MV500 Operating Instructions Manual page 26

Description
1.7 Functional description
Processing
The actual processing is triggered by different events.
• In the simplest situation, the optical reader generates the trigger event itself. Optical
readers have an auto-trigger function for this purpose.
• Depending on the application, it may be advisable to provide the trigger event via the I/O
cable. In this case, the optical reader obtains the signal, for example, from a light barrier.
The trigger signal immediately triggers image acquisition followed by evaluation. The
result of the evaluation is then transferred to the higher-level control system through the
selected communications connection. Once the evaluation result has been transferred,
reading can be started again.
User management and access protection
The functions of the optical reader can be protected from unauthorized access and
manipulation. The access rights can be assigned to various personified users in the form of
user roles.
Configuration via remote client
The configuration of the optical reader can be backed up and restored automatically, for
example, when there is a shift change, using a connected PC. This means the validation of
your production plant can be restored at the press of a button.
Diagnostics functions
The optical reader has comprehensive diagnostics functions. If incorrect readings are made,
the diagnostics functions can be used to find reasons for the errors based on the recorded
images. This is necessary, for example, if problems occurred in the prior marking process.
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Operating Instructions, 03/2021, C79000-G8976-C494-05
SIMATIC MV500