Construction and function
Technical Manual
31
04043552 - 07/2017
Terminal 97 00
4.1.3.6
Overview of the equipment
Equipment/Motherboard
none
BEX120
BEX121
BEX122
Power supply
PoE
X
X
24 V DC
X
Mains voltage
X
Interfaces
RS-232C interface
X
X
X
Additional interface
X
X
X
Inputs/Outputs
2 relay outputs
X
X
X
4 digital inputs
X
X
X
4.1.4
Interface assignment
COM port
Assignment
COM1
Internal reader (integrated into terminal housing)
COM2
Internal reader (integrated into terminal housing)
COM3
Additional interface (docking station motherboard)
COM4
RS-232 for external reader (docking station motherboard)
4.1.5
Uninterruptible power supply UPS510
The uninterruptible power supply UPS510 ensures operation in case of short-term power sup-
ply failure.
The UPS510 is snapped into place on the rear side of the terminal housing.
The UPS510 can be retrofitted or replaced at any time.