DeviceNet™

DeviceNet TM is a bus system developed by Allen Bradley (Rockwell Automation) and is based on the proven and reliable CAN technology.

Thicker cables (2xAWG18+2xAWG15) normally serve as backbone (trunk cables). Connection of various industrial devices (e.g. PLCs, limit switches, etc.) to the backbone is in general by means of thinner cables (2xAWG24+2xAWG22), as drop cables. However, thinner cables can also be used as supply cables but then shorter transmission distances will be achieved, with the same data rate. Medium-thick cables – mid cables – (2xAWG20+2xAWG18) can be used for both applications but in these cases restrictions in lengths and / or data rates have to be considered.

As standard, all cables are supplied with the appropriate approvals for the North American markets.

Maximum cable lengths of a bus segment Trunk Cable thick

Trunk Cable thick 2xAWG18+2xAWG15

• 125 kbit/s = max. 500 m
• 250 kbit/s = max. 250 m
• 500 kbit/s = max. 100 m

Trunk Cable thin 2xAWG24+2xAWG22

• 125 kbit/s = max. 100 m
• 250 kbit/s = max. 100 m
• 500 kbit/s = max. 100 m

Drop Cable

• 125 kbit/s = max. 6 m
• 250 kbit/s = max. 6 m
• 500 kbit/s = max. 6 m

Drop Cable cumulative length

• 125 kbit/s = max. 156 m
• 250 kbit/s = max. 78 m
• 500 kbit/s = max. 39 m