Werner
Member
Hi there.
I need some advice on the following:
I have 5 S7 projects. (in total including 10 PLC's en 10 MP277 touchscreens or so). Within an S7 project I must be able to program all PLC's (S7 300) and MP277 over 1 connection. (For instance MPI or Profibus). (All PLC's also have a profibus network with ET200S islands)
Futhermore I must be able to create connections between the plc's to exchange simple data. (1 or 2 byte per connection). The catch is I must also communicate between the several projects. (It is not possible to make one large project)
Normally we connect for example 3 plc's and 3 touchscreens via MPI together and use Global data for this simple data exchange. It is my experience that this slows down dramatically when the network increases in size and number of nodes. So in my opinion it is not advisable to connect all plc and touchscreens together in one large MPI network.
How would you guys do this?
The reason I want this:
There are 5 production lines which can operate completely independant. (Thats one of the reasons why we use seperate S7 projects) The communication links are needed for the product packing where there are several routings possible for the products. (So it is possible to pack products from line 1 on the packing machines from line 2 etc)
Thanks you in advance
I need some advice on the following:
I have 5 S7 projects. (in total including 10 PLC's en 10 MP277 touchscreens or so). Within an S7 project I must be able to program all PLC's (S7 300) and MP277 over 1 connection. (For instance MPI or Profibus). (All PLC's also have a profibus network with ET200S islands)
Futhermore I must be able to create connections between the plc's to exchange simple data. (1 or 2 byte per connection). The catch is I must also communicate between the several projects. (It is not possible to make one large project)
Normally we connect for example 3 plc's and 3 touchscreens via MPI together and use Global data for this simple data exchange. It is my experience that this slows down dramatically when the network increases in size and number of nodes. So in my opinion it is not advisable to connect all plc and touchscreens together in one large MPI network.
How would you guys do this?
The reason I want this:
There are 5 production lines which can operate completely independant. (Thats one of the reasons why we use seperate S7 projects) The communication links are needed for the product packing where there are several routings possible for the products. (So it is possible to pack products from line 1 on the packing machines from line 2 etc)
Thanks you in advance