charlesdes

Ok thank you, which serial software would you recommend ?

I try to communicate with a ASCII device by serial communication with an AB CompactLogix L23E. I don't understand why I receive anything, I did all these steps : 1- I made a cable like this : cable 2- I configured the device : ASCII device 3- Then I settled the string to send http://hpics.li/893323c 4- Configured the controler like the device : My link http://hpics.li/099ee48 5- Finally, made this program http://hpics.li/c898901 And the string never change its value. What I've done wrong ?

According to me, you should put your MOV instructions on another rung instead of beside MAM instruction. Personnaly, I would make another rung under the MAM instruction with the .DN bit. I made an exemple in attachement

I talk with someone today who told me that it is true that only new generation of compactLogix can open socket. But, he told me I should be able to map the camera using the IP address. I just need to specify, in the message instruction path, that I coming out of the controller, then from the controller I reach towards the device.

Yeah you are right sorry. But, you can force (or toggle) the output or bit at the end of the input rung instead of force your input.

Yes, it's a real input, toggle bit works for any bit/bool (I/O and internal bit)

Try if it does the same thing if you toggle bit instead of force on.

The camera can communicate by serial link, that is what I will do to read the string but I will contact the vendor before to be sure it's impossible by Ethernet. Thanks again for your help and I will use the tip of b_carlton in the future

Thanks for your reply, So what I understand is that it is impossible to read the string of the camera without a 1756-EWEB. I thought it was possible with the message instruction. The microscan's vendor said me it was compatible with AB plc when I bought the camera but he didn't said me I had to buy a communication module... I've try to read the string output of the camera with telnet in it works, so I just need to make the PLC reads this. Thanks a lot for your help.

Hi, I work on a projet with a microscan visionHAWK smart camera. This camera can send a string through a tcp port on Ethernet/IP network. I try to read this string in rslogix 5000 for my AB compactLogix L23E PLC. Is it possible to read a string with the message instruction? In the instruction help, I see that it can read and write integer and real. Also, I would like to know how I can specify a port. Exemple : the IP adress of the smart camera is 10.1.105.247 and it sends the string on the 41211 tcp port, do I have to write 10.1.105.247:41211 in the path of the message instruction? Thanks for your help Charles