Kapitel 3 Base module interfaces
Abb. 3: Base module interfaces
Serial 1
System GND terminal
(functional earth)
ETH 1
Audio in / out
SD card
ETH 2
Serial 2
Reset
ETH 3
elmeg hybird 600 LED
Contacts
ETH 4
USB
Contacts
ETH 5
Maintenance
Option
Option
3.1 Serial 1 / Serial 2 (RS 232 interface 1 and 2)
• The serial 1 interface is designed for connecting a laptop or a PC with serial interface for console applications.
• The serial 2 interface is designed for connecting a printer with serial interface for hotel applications (check-in /
check-out).
The serial 1 / 2 interfaces are not galvanically isolated from the elmeg hybird 300 / elmeg hybird 600 mass. If PC's
or printers are connected with the serial interfaces, these should be powered from the same 230V line as the elmeg
hybird 300 / elmeg hybird 600. Otherwise an equalising current may flow through the safety earth / service earth.
This could lead to data transmission disruption.
Any work on serial 1 and 2 interfaces may only be performed in the presence of a properly connected functional
earth. Devices to be linked via the interface (e.g. PC or printer) must be switched off and disconnected from the
230V~ power supply before the serial 1 and 2 interfaces are connected!
3.2 Mini USB interface assignment
nc
TxD
RxD
nc
bintec elmeg GmbH
3 Base module interfaces
elmeg hybird 300 / 600
5