adccommunitymod (AutomationDirect) asked a question.
Created Date: November 06,2003
Created By: The Rock
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Not being too familiar with bar code readers, I could use some suggestions on the best way to interface a bar code scanner with my PLC. The proposed project is to install 1 to 5 bar code scanners one at each workstation on our lines. Each operator will have to scan parts; fixtures and their ID number at the beginning of each new run. This will then be checked against a matrix of numbers to verify that everything is correct. I have a 9-slot base with a 9-slot expansion using a D2-CM and a D2-EM. Each base has a 250-1 processor, an H2-ECOM module in the last slot. There is also input and output cards and I have two slots unused at this time. The expansion module has four 12 pt output cards in it. I am using port 1 to communicate with the touch screen. I am using the Ethernet card for internal networking to my desktop. I hope this is enough information any help would be appreciated.
Created Date: November 06,2003
Created by: The Rock
Not being too familiar with bar code readers, I could use some suggestions on the best way to interface a bar code scanner with my PLC. The proposed project is to install 1 to 5 bar code scanners one at each workstation on our lines. Each operator will have to scan parts; fixtures and their ID number at the beginning of each new run. This will then be checked against a matrix of numbers to verify that everything is correct. I have a 9-slot base with a 9-slot expansion using a D2-CM and a D2-EM. Each base has a 250-1 processor, an H2-ECOM module in the last slot. There is also input and output cards and I have two slots unused at this time. The expansion module has four 12 pt output cards in it. I am using port 1 to communicate with the touch screen. I am using the Ethernet card for internal networking to my desktop. I hope this is enough information any help would be appreciated.
Created Date: November 06,2003
Created by: ctipete
I used a bar code scanner that had ASCII output capabilities and a DL260 CPU, which has an ASCII input instruction, to read the data.
Created Date: November 06,2003
Created by: bcarlton
We 've used bar code scanners, though only one at a time, and interfaced using the BASIC coprocessor. It provides two ports (3 if the baud rate is low and there's no hard handshaking).
Created Date: November 07,2003
Created by: chris.zeman
I'm currently developing a project that uses a DL06 to dispense bar-coded tickets and uses barcode readers to keep track of which ticket numbers it has dispensed. A DL06 at another location uses a barcode scanner connected to Port 2 to read the tickets as they are returned and makes sure they fall within a tolerance level of the dispensed sequence. I may be doing something wrong, but when the ASCII data is received by the PLC, I convert the ASCII to HEX and then have to shuffle the digits so that the digits are in the correct order. When I convert ASCII to HEX, the ticket number, say 3211 is stored as 1123. At least the PLC receives the data 100% of the time. http://forum1.automationdirect.com/board/smile.gif
Have fun!
Chris