Fb 79 "Vs130-2_Control - Siemens SIMATIC Vision Sensor VS 130-2 Manual

6.5.5

FB 79 "VS130-2_CONTROL"

Description
With FB 79 "VS130-2_CONTROL", you have a convenient means of
communication with SIMATIC VS 130-2. You simply specify the job and the block
handles communication over the public interfaces described in Integrating the
PROFINET IO Device VS 130-2 in HW Config.
The following bits of the control byte must be processed outside the FB.
•
TRG (Trigger): Start Processing
•
RES (Reset): Acknowledgment of an error (see Error Messages)
The FB monitors only the pure data traffic between VS 130-2 and the controller, in
other words, the DONE parameter does not provide any information on the actual
read result. To obtain a good/bad read evaluation, evaluate the following result bits
of the status byte:
•
READ
•
MATCH
•
NOK
The following tasks are possible:
•
Abort the current job
•
Select Code
•
Train a code
•
Output the result string
•
Output the position of the code
•
Output the quality characteristics of the currently read code
•
Output the number of the currently selected code
•
Output the current mode of the VS 130-2
•
Reset the DISA control signal
Whether or not a job can be correctly executed depends on the current mode of the
VS 130-2 and its parameter assignment. Which job is possible in which mode of
the VS 130-2 is explained below.
For almost all tasks, FB79 sets the DISA control signal for the VS 130-2 to TRUE.
This prevents the VS 130-2 from being controlled from the keyboard or an operator
panel at the same time. The exceptions are the four following tasks:
•
Reset the DISA control signal
•
Abort the current job. The FB does not change DISA.
•
Output the number of the currently selected code. The FB does not change
DISA.
•
Output the current mode of the VS 130-2. The FB does not change DISA.
Vision Sensor SIMATIC VS 130-2/VS 130-2vcr
A5E00475759-01
Process Interface
6-19