Hi,
I have a system with S7-400 and several Profibus DP nodes, mostly ET200S and a few drives.
How can I programatically know that a particular node is OK ?
I know that I can use OB86 to flag when a node is missing. But it is the opposite that I am after. To get a confirmation that a node is online and OK. In that way I can trap errors in the configuration as well. In the end I will like to make a nice diagram on my HMI with the entire configuration, and then animate it live with the status of the nodes. If there is a problem, the operator can look on the diagram and know where he has to go looking.
I have searched high and low for a solution to this problem that I thought simple. Everything I find seeems to point me to lists of error codes and Profibus status words that contain error bits.
I find it amazing that a simple "OK" bit for each node cannot be found.
Anyone knows ?
I have a system with S7-400 and several Profibus DP nodes, mostly ET200S and a few drives.
How can I programatically know that a particular node is OK ?
I know that I can use OB86 to flag when a node is missing. But it is the opposite that I am after. To get a confirmation that a node is online and OK. In that way I can trap errors in the configuration as well. In the end I will like to make a nice diagram on my HMI with the entire configuration, and then animate it live with the status of the nodes. If there is a problem, the operator can look on the diagram and know where he has to go looking.
I have searched high and low for a solution to this problem that I thought simple. Everything I find seeems to point me to lists of error codes and Profibus status words that contain error bits.
I find it amazing that a simple "OK" bit for each node cannot be found.
Anyone knows ?