Appendix Description of the physical interface
T5023/5023+ - Programming Guide 373
Cable connection document printer - PC
Pin-
No. Document printer
9-pin plug Cable Pin-No. PC
9-pin plug
1 Printer switched on
(+12V) ==> 1 DCD Data Carrier
Detect
2 RD Received Data
Serial data entry printer ‹== 3 TD Transmitted
Data
3 TD Transmitted Data
Serial data exit printer ==> 2 RD ReceivedD ata
4 DTR Data Terminal
Ready exit
In the DTR/Busy
protocol the ’ON’ status
signals the connected
device (signal receiver)
the readiness to receive
data
==> 6 DSR Data Set
Ready
5 SG-Signal Ground <==> 5 SG-Signal Ground
6 DSR Data Set Ready <== 4 DTR Data Terminal
Ready
7 RTS Request to Send
In the DTR/Busy
protocol the ’ON’ status
signals the connected
device (signal receiver)
the readiness to receive
data
==> 8 CTS Clear to Send