NCR RealPOS 60 - Serial Port Connectors (A, B, C, D)

Circuit Boards 7
Serial Port Connectors (A, B, C, D)
TheMotherboardincludesfourexternalRS‐232portswiththefollowing
characteristics:
•Standard9pinD‐shell
•Portshaveashunttoselectbetween+12VandnormalRIfunctionality.Thedefault
is12V. Theseportsaremarkedwiththelightningboltsymboltosignifyits
poweredcapability.
•Maximumpowercapability
is1.5Afromanyoneportwithamaximumcombined
capabilityof3.0Aforallports.Total+12Vpowerperipheralcurrent(RS‐232and
USB)mustNOTexceed3.0A.
•The+12Voutputsfromthepoweredportsareprotectedbyaselfhealingfuse.
•Ifaportdoes
nothave+12Vconnectedtopin9,thatportcanbeusedtowakeup
theterminalfromStandbyviaactivityontheRIpin.
•COMAandCOMMBportsareprovidedinaDB9dualstackconfiguration.Color:
TealorTurquoise
•COMCandCOMDareindividuallymountedontheBack
Panelandconnectedto
theMotherboardwithcables.Color:Black
PIN No. Signal Description
1DCD(DataCarrierDetect)
2RXD(ReceiveData)
3TXD(TransmitData)
4DTR(DataTerminalReady)
5GND(Ground)
6DSR(DataSetReady)
7RTS(RequesttoSend)
8CTS(CleartoSend)
9RI(RingIndicator)or+5Vor+12V