S7 Communication between 3 siemens 317-2pn/dp plc

[IJK]

Dear Experts

I have three Siemens master 317-2 PN/DP Plc

i want to do communication between them which is the best way to do it

i am using profinet

one way i know is using s7-connection and using fb14 send
fb15 receive

Please tell me if there is any other option.

 

[JesperMP]

AG_SEND and AG_RECV will only work with a CP343-1.
The equivalent blocks for a CPU with integrated PN port are TSEND, TRECV, TCON, TDISCON.
Look here: http://www.plctalk.net/qanda/showpost.php?p=322868&postcount=6

 

[IJK]

If i am using S7 connection in netpro and ethernet hub for routing the ethernet cable to the plc

Where should i use cross ehternet cable and where shoud i use straight ethernet cable

 

[IJK]

Please see the attached file also

 

[JesperMP]

With the blocks TSEND, TRECV, TCON, TDISCON, you do not setup the connection with Netpro.
Use the sample projects that I linked to.

Nobody uses hubs any longer. Using a switch, you dont have to worry about straight or crossed.