RS-232
303
RS-232
Receive Data (RXD). Serial data stream to the printer.
Transmit Data (TXD). Serial data stream from the printer for 
transmitting status and control information to the host. Subject to 
protocol selection.
Request To Send (RTS). Control signal from the printer. Subject to 
configuration.
Table 12. Standard 500, 1000, 1500 lpm Models 
RS-232 Serial Interface Connector Pin Assignments
Input Signals Output Signals Miscellaneous
Signal Pin Signal Pin Signal Pin
Receive Data (RXD) 3 Transmit Status & Control 
Data (TXD)
2 Chassis Ground 1
Clear To Send (CTS) 5 Request To Send (RTS) 4 Signal Ground 7
Data Set Ready (DSR) 6 Data Terminal Ready (DTR) 20
Data Carrier Detect (DCD) 8
Table 13. RS-232 Serial Interface Connector Pin Assignments
Input Signals Output Signals Miscellaneous
Signal Pin Signal Pin Signal Pin
Receive Data (RXD) 2 Transmit Status & Control 
Data (TXD)
3 Chassis/Signal Ground 5
Clear To Send (CTS) 8 Request To Send (RTS) 7
Data Set Ready (DSR) 6 Data Terminal Ready (DTR) 4
Data Carrier Detect (DCD) 1