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Process interfacing via an automation system (PLC, PC)
9.7 Scanner portal application
SIMATIC MV500
Operating Instructions, 03/2021, C79000-G8976-C494-05
207
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Menu: "Settings > Communication > Use > Connection"
Select the value "TCP" in the "Text" drop-down list.
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Menu: "Settings > Options > Extras > Scanner portal"
Select the "Master reader" check box.
Configuration of the slave devices
Make the following settings in the WBM for the slave devices:
•
Menu: "Program > Image acquisition > Trigger"
To control the image acquisition, select the mode "Auto-trigger" (without "Initial trigger").
Make sure to enter the value "1" in the "Recognize double read" input box.
The acquisition interval must be sufficiently long for the 1D/2D codes in the image to be
read. The interval must be identical on all slave and master devices.
•
Menu: "Program > Result > Program format text"
Enter the value "\
02[CamId]
\03%s\04" in the "Format text" input box.
–
[CamId] can be selected freely and is used to identify the optical reader that read the
1/2D code in the field of view.
–
The value "\02\03%s\04" is also allowed if no identification of the optical reader is
desired in the result output.
•
Menu: "Settings > Communication > Interfaces > TCP"
–
Enter the IP address of the master device.
–
Enter the port number "666".
–
Enter a time limit of "3 s".
–
Enter the value "\04" in the "Idling string" input box.
•
Menu: "Settings > Communication > Use > Connection"
Select the value "TCP" in the "Text" drop-down list.
•
Menu: "Settings > Options > Extras > Scanner portal"
Clear the "Master reader" check box.
9.7.2
Output of the synchronized read result by the master reader
Output via the TCP interface
The master device synchronizes the results of the slave devices and outputs the synchronized
result via the TCP interface. The result string of the slave device that read the 1D/2D code first
is output. For this purpose, the master device compares the string between "\03" and "\04" of
the read 1D/2D codes. The entire result string is output, whereby the "\02", "\03" and "\04"
texts are first removed.
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