Specifications

Profibus DP Head Station STL-PB1 (Profibus DP)
2 - 4
MITSUBISHI ELECTRIC
2.2.1 View
2.2.2 Device Supply
The device supply is intended both for the system and the field units. Two external supply voltages are
required:
● 24 V DC for the head station
● 24 V DC for the connected STlite modules (forwarded via the power jumper contacts)
The fieldbus interface is supplied with electrically isolated voltage from the internal system supply
module.
Fig. 2-3: Head station STL-PB1 (Profibus DP)
Fig. 2-4: Block diagram for the head station STL-PB1 (Profibus DP)
Status of power
supply
– System
– Power jumper contacts
Data contacts
Supply
24 V DC
0 V
Supply via power jumper
contacts
24 V DC
0 V
Profibus DP interface
(9 pin D-Sub, female)
Address
Address
Configuration interface
Power jumper contacts
Electronics
Modules
Fieldbus
interface
Fieldbus
interface
Electronics