I have two devices - a Turck BL20 and a Bosch IndraDrive both running CoDeSys. I'd like to share a few variables (Command and Status Feedback) between the two unit and I've tried network variables (over Ethernet UDP), but I have a question about the configuration:
Do I set up two lists, one for the Turck > Bosch transfer and the second for the Bosch > Turck transfer, or can I use a single list as only one device is writing to each variable? Using a single list I only see data transfer in one direction.
Also can data be configured to send on change of state, and also periodically at the same time?
Regards,
PJE
[EDIT] Does anyone have a simple program which when loaded on two CoDeSys systems can send a 32 bit variable in each direction. This would help me out immensely.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
You can use a list from Turck to Bosch, a list from Bosch to Turck and both.
You have to know that Netvariables use a UDP protocol, it is to say a non connexion protocol. When you send variables you don't know if the other PLC received ths variables.
But if you use a list in both sens, you can create a kind of response.
You can configure a list to be send both by the tree type of action (change of value, periodically and on the state of a variable)
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Thanks for the input. This is what I was trying, but for some reason I was unable to get it to talk. In the past I've implemented my own version of network variables between the Bosch drive and a Linux embedded controller, but was hoping to use the built in functions between the Turck and Bosch systems as they're both running CoDeSys.
Regards,
PJE
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I have two devices - a Turck BL20 and a Bosch IndraDrive both running CoDeSys. I'd like to share a few variables (Command and Status Feedback) between the two unit and I've tried network variables (over Ethernet UDP), but I have a question about the configuration:
Do I set up two lists, one for the Turck > Bosch transfer and the second for the Bosch > Turck transfer, or can I use a single list as only one device is writing to each variable? Using a single list I only see data transfer in one direction.
Also can data be configured to send on change of state, and also periodically at the same time?
Regards,
PJE
[EDIT] Does anyone have a simple program which when loaded on two CoDeSys systems can send a 32 bit variable in each direction. This would help me out immensely.
On 3s FTP server I found this. The site will soon be erased to hurry up if you need more examples.
I have not tried or used network variables my self.
/Torbjörn
Networkvariables.zip [20.92 KiB]
Thanks,
I've downloaded the file and I'll try it as soon as I get into work.
PJE
You can use a list from Turck to Bosch, a list from Bosch to Turck and both.
You have to know that Netvariables use a UDP protocol, it is to say a non connexion protocol. When you send variables you don't know if the other PLC received ths variables.
But if you use a list in both sens, you can create a kind of response.
You can configure a list to be send both by the tree type of action (change of value, periodically and on the state of a variable)
Hi JAPIB,
Thanks for the input. This is what I was trying, but for some reason I was unable to get it to talk. In the past I've implemented my own version of network variables between the Bosch drive and a Linux embedded controller, but was hoping to use the built in functions between the Turck and Bosch systems as they're both running CoDeSys.
Regards,
PJE