Understanding Cash Control Unit
Connections and SD Slot
6 of 27
User Manual Cash Control Unit 1.0/Edition 12.2009
ID No. 30033908
1.1
Connections and SD Slot
Connections
Cash Control Unit is a type A configuration with two connections.
Fig. 2
Cash Control Unit connections
The USB type B plug serves as power supply only.
The serial port is used to communicate with the ECR via the RS232 cable
provided. Communication speed can be set using the DIP switches (see
’1.3 DIP Switches’ on page 9).
Serial Port Pins
Cash Control Unit is equipped with a 9-pin female serial port:
Fig. 3
Serial port with numbered pins
The Cash Control Unit serial port pins are used for the following signals:
USB type B power supply plug
Serial port
Pin Signal
Direction
1
DCD
outgoing
2
TX
outgoing
3
RX
incoming
4
DSR
incoming
