plc communication

[atmoha 0]

hi every one i wanted to make a program to establish a communication between two PLCs using ladder program to send data from one and the other receive and response with another type of data(using the block move)..ive seen one tutorial but it wasnt so clear..can some one guive me a good tutorial for that? best regards

[ianbuckley 0]

Which two controllers are going to be communicating? two s7-300 series? two s7-200 series? an s7-300 and an s7-200? Which communication type? More detail is necessary for anyone to try to help you...

[atmoha 0]

i want to use two plc-300 series communicating via industrial ethernet or profibus..the most important thing to me is to know how to program that and which blocks i should use.. best regards

[Groo 7]

If you make one a MASTER and the other a SLAVE, you won't need blocks. If both are MASTER's then you would need blocks unless you used a DP/DP Coupler.