PROFIBUS DP network topology
Hybrid field bus connections
Hybrid field bus connections configured as control cabinet glands transmit data and power from the control cabinet (IP 20) into the field (IP65). They are the interface for jointly routing PROFIBUS DP and the auxiliary voltages into the hybrid field bus cable. The active hybrid field bus connections with signal refresher function can considerably increase the maximum PROFIBUS cable length when used in the field.
Hybrid field bus cables
Four copper cores are available for thetransmission of voltage in the hybrid field bus cables.
There are two transmission types for thedata transmission with PROFIBUS DP in hybrid field bus cables:
- Electrically via two Cu-RS 485 copper cores
(see ECOFAST hybrid field bus cables PROFIBUS DP in Cu-RS 485) - Optically via two plastic fiber-optic cables
(see ECOFAST Fiber Optic Hybrid Cable)
HanBrid plug-in connectors
The hybrid field bus cables are connected to the data T pieces via HanBrid plug-in connections.
Connection of the field devices to PROFIBUS DP
Data T pieces
Data T pieces
The data T pieces connect individual field devices to the ECOFAST hybrid field bus PROFIBUS DP. They ensure the interruption-free operation of the data bus when the field device is unplugged.
There are two T pieces in the ECOFAST system:
- Data T piece for PROFIBUS DP with copper cable (PROFIBUS DP RS 485) and 2 x 24 V auxiliary voltage (switched and non-switched)
- Data T piece for PROFIBUS DP with fiber-optic cable (PROFIBUS DP FO) and 2 x 24 V auxiliary voltage (switched and non-switched)