to whom may concern...
Following your suggestions (Gambit) I had success to get this system works but...problem is the number of connections (16 in total) used for connecting together 5 PLCs and 4 HMIs (18 connections in this case for sending and receiving). That considering also the 4HMI because on the ship system i am working on, they are spread in locations not reached by PLC but only by ethernet connection.
Unfortunately, as far as i could discover, QJ71E71-100 doesn't support the "MC Protocol" which is instead supported by Built-In_Ethernet port on model Q06UDEHCPU. I heard this protocol has been provided to this kind of CPU in order to get it in communication with PC, but Beijer, years ago, developed a program part for using with success also for PLC to PLC communication. The advantage is, as far as i could experienced, that by using "MC Protocol" it is possible to use the same channel for send-receive data; this is not possible using the standard features fo QJ71E71-100 device, which instead want to occupy 2 connections for sending and receiving.
Therefore i am redirecting to this built-in-port CPU.
Once again i would like to say thank you and i have also naother curiosity: does anyone of you experienced a problem of limitation like this with QJ71E71-100 device? Which is the advandage to have it instead of using the built-in-port if we loose this "MC Protocol" option?
thanks anyway and have an happy easter