networking systems

hello could some one explain profibus and DH+ networking for me thanks captive

I'll take a shot at DH+; I'll leave an explanation of Profibus to one of the Siemens experts.

DH+ (Data Highway Plus) is an Allen-Bradley communications protocol that utilizes a twinaxial transmission media (Belden 9463). It is a deterministic protocol (devices on the network have a unique I.D. of "Node" number) that supports up to 64 devices (nodes). Baud rate is 57/6 kbps with a maximum trunkline length of 3,048 meters and maximum dropline length of 30.4 meters.

Try this link for info on Profibus:

http://www.profibus.org/profibus.html

If you goto the link mgvol provided then click on Documentation then look on left for Web Based Training it is a free online training course for Profibus.

For DH+ http://www.ab.com/en/epub/catalogs/12762/2181376/214372/1491278/