54
RS-232 connection
7
RS-232 RJ45 Direct connection to HP printer with hardware handshake
This cabling scheme is recommended for connecting to the following devices when
a hardware handshake is necessary:
Note HP Laser printers provide hardware flow control of host ports using DTR on pin 20.
The HP DTC family provide hardware flow control of devices using RTS/CTS on
pins 8 and 22.
HP Laserjet: HP 2684A/P, 86A/D,HP33440A/F,47A/F,49A,59A,
41063A,C1200A,C1202A
HP Ruggedwriter: HP 2235
RJ45
extension
cable
RJ 45 male connector to DTC
1 - RD INPUT
3 - TD OUTPUT
4 - CTS INPUT
5 - RTS OUTPUT
6 - SGND -
25-pin male connector to printer
2 - TD OUTPUT
3 - RD INPUT
20 - DTR OUTPUT
1 - PGND -
7 - SGND -
4 - RTS OUTPUT
11
33
44
55
66
RJ45 male
connector
RJ45 female
connector
RJ45 to DB25
adaptor
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