Compuprint 4247-Z03 Programmer Manual Manuel d'utilisateur Page 356

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Serial Interface Signals
The following table lists the RS-232/C serial interface signals:
Signal Name Pin Number
Local
Connect.
Source
Remote
Connect.
Source Description
SIGNAL
GROUND
5 Always connected to the 0 Volts of the Power Supply
TXD 3 Printer Printer 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.
RXD 2 Host Data Set Received data signal (an input to printer).
RTS 7 Printer 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 .
CTS 8 Data Set Active HIGH level signal indicates that the host or data
set is ready to receive data from the printer.
DSR 6 Data Set 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.
DCD 1 Data Set Active HIGH level signal. Indicates that the host is
transmitting or the data set is receiving the Data Carrier
signal.
2nd RTS 9 Printer Functionally equivalent to the DTR signal.
DTR 4 Printer Printer Data Terminal Ready. Normally HIGH (ON). Indicates
that the printer is ready to initiate a connection.
LAN Interface Port
LAN Interface Port
1. Ethernet 10/100BaseT Connector
2. Green 10/100Mbit/sec. Transmission Speed LED
3. Yellow Traffic LED
LED Indicators
The LED indicator modes are described in the following table:
LED Status Description
Yellow LED Unlit Transmission speed at 10Mbit/sec.
Lit Transmission speed at 100Mbit/sec.
Green LED Blinks Transmitting or receiving packets from the network.
USB Interface Port
USB 2.0 full speed 12/Mbit/sec. interface.
336 Programmer Manual
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