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Showing results for tags 'Barcode'.
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On a previous project I got hung up on a USB barcode reader and only getting it to work as a keyboard wedge. Causing extra steps for the operator. Which barcode readers have you used/integrated with Unistream successfully? Thanks in advance.
New to Unitronics. Now working for a company that has a couple of dozen machines run with Vision PLC/HMI units. What do I need to do to get a Vision-based system to read and execute a subroutine when the machine sees a barcode? Datamatrix barcode. - reader has not been selected yet.
Hi All - I am working to connect a barcode reader to a Vision 120 PLC via RS232. I have two barcode readers on hand - a Motorola Symbol LS4278 (which reads 1D and 2D codes), and a 1D-only Royal PS700-LSR. Both readers are set up the same way - serial cable with external power input into the scanner, connected to the PLC by a DB9 to RJ45 adapter. When connected to a Serial-to-USB converter to the computer, both scanners send the same data to the Serial Terminal (I am using Hercules). But when connected to the PLC, the Royal scanner data is read as expected, but nothing happens when scanning codes with the Symbol scanner. On the PLC, the Session Complete bit is never set by the Protocol Scan block so none of the other processing is triggered when the Symbol scanner is connected. With the Royal scanner, each scan flips the Session Complete bit, and data is copied and formatted correctly. When the scanners are connected to the computer, I see the exact same hex characters in Hercules from both scanners. PLC program attached. I have tried and confirmed various serial communication settings (baud rate, STX/ETX chars, handshaking, etc.) to match between the scanner and the PLC, and I have worked through the suggestions in this thread: Can anyone suggest what the difference between the two readers might be? I need to make the Symbol reader work since the system will read 2D barcodes. Thanks, Doug Davies 120-barcode-scanner2.vlp
Hello everybody, Im wondering if you could help me. Im currently doing a project using the V570 and need some help. What im trying to do is setup a login screen were you would have to scan a barcode made specifically for an operator to allow said operator to acess the work screen. My own idea on how to do this would be to save the barcode into the PLCs memory and then use a Comparison function block so when the barcode scans a different barcode, it won't register it but if it scans the same barcode, it will operate and proceed to the next screen. So i suppose what im asking is, is there a way to store a particular barcode into the system and use it as an input? Is the soultion i've discribed above suitable as a login system? I am familer enough ladder logic and fuction blocks but i'm a total novice working with unitronics, Visilogics and barcode scanners systems, so any help would be amazing. Thanks!, Dan P.S. the barcode scanner i'm using is a Metrologic 7120 Orbit barcode scanner incase that has any revelance, Thanks for reading!