Attachment Connectors - InfoPrint 4247 Z03 Maintenance Information

Attachment Connectors

Table 17. RS232/C serial interface signals
Signal Name Pin Number
SIGNAL 5
GROUND
TXD 3
RXD 2
RTS 7
CTS 8
DSR 6
DCD 1
2nd RTS 9
DTR 4
Remote
Local Connect. Connect.
Source Source
– –
Printer Printer
Host Data Set
Printer Printer
Data Set
Data Set
Data Set
Printer
Printer Printer
Description
Always connected to the 0 Volts of the Power Supply
Transmitted Data Signal (an output from printer). A MARK
condition is held during IDLE communication state. An
indeterminate state is present when printer is powered off.
Received data signal (an input to printer).
Request to Send Signal (an output from printer). Active HIGH
level signal. It is HIGH until the printer is powered off, then an
indeterminate state is present .
Active HIGH level signal indicates that the host or data set is
ready to receive data from the printer.
Active HIGH level signal. Indicates that the host or data set is
ready to be connected to the printer and is ready for data
transfer.
Active HIGH level signal. Indicates that the host is transmitting
or the data set is receiving the Data Carrier signal.
Functionally equivalent to the DTR signal.
Data Terminal Ready. Normally HIGH (ON). Indicates that the
printer is ready to initiate a connection.
Chapter 3. Wiring diagrams
124