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58 LP 2824-Z User Guide 980531-001 A
Interfaces
Serial (RS-232) Connector
Serial (RS-232) Connector
The maximum current available through the serial and/or parallel port is not to exceed a total
of 0.75 Amps.
When XON/XOFF handshaking is selected, data flow is controlled by the ASCII control codes
DC1 (XON) and DC3 (XOFF). The DTR control lead will have no effect.
Interconnecting to DTE Devices —The printer is configured as data terminal equipment
(DTE). To connect the printer to other DTE devices (such as the serial port of a personal
computer), use an RS-232 null modem (crossover) cable.
Interconnecting to DCE Devices —When the printer is connected via its RS-232 interface to
data communication equipment (DCE) such as a modem, a STANDARD RS-232 (straight-
through) interface cable must be used.
Pin No. Description
1 Not used
2 RXD (receive data) input to the printer
3 TXD (transmit data) output from printer
4 DTR (data terminal ready) output from the printer -- controls when the
host may send data
5 Chassis ground
6 DSR (data set ready) input to the printer
7 RTS (request to send) output from the printer -- always in the ACTIVE
condition when the printer is turned on
8 CTS (clear to send) input to the printer
9 +5 V @ 0.75 A fused