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RW 420 User Guide
Connecting the Printer
The printer must establish communications with a host
terminal which sends the data to be printed. Communications
occur in three basic ways:
• By a cable between the printer and its host terminal using
either RS232C or USB protocols.
• By means of a Bluetooth short-range radio frequency link.
• By means of a wireless LAN (Local Area Network) per
802.11b specifications.
While the RW 420 can be equipped with both a Bluetooth radio and a
802.11b radio they cannot be operated concurrently.
Figure 11: Communications Port
Cable Communications
Serial (RS232C)
CAUTION. The power should be turned off before connecting or
disconnecting the communications cable.
All RW 420 printers can communicate by cable; the specific
cable supplied with your printer will vary with the host termi-
nal. The 10- pin modular connector on your communications
cable plugs into the serial (RS232C) communications port on
the side of the printer. Plug the connector into the RS232C
port and ensure the locking device has clicked into position.
Then press the Locking Plug into the opening around the con-
nector, aligning its locking features with the cutouts on the RW
420 case. Turn the Locking Plug clockwise one-quarter turn to
secure it in place.
The other end of the cable must be plugged into the host
USB Port
RS232 Port
Align Locking
Plug features
with these cut-
outs.
Rotate clock-
wise to lock the
cable in place;
counterclock-
wise to unlock
the cable.