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Troubleshooting for Serial Interfaces
Problem
Printer prints one
character then stops
Recommendation
The EX uses the DIR signal and the
X-on/X-off protocol (via TXD) to tell the
computer whether it is ready to receive
characters or whether it is busy printing.
Refer to your computer’s documentation
and ensure that the computer is using
one of these systems. You may also need
to check your cable wiring or ask your
dealer to do it for you.
READY light flickers
but nothing is printed
Data is getting through to the printer
although it is not being printed. Make
sure that both the printer and computer
are using the same baud rate, number of
start and stop bits, and the same parity
All printing is garbled
Make sure that both the computer and
printer are set to use the same number of
data bits per word (8) and that they both
use the same parity, baud rates, and
number of start and stop bits.
Serial Interface Specifications
The EX built-in serial interface is an RS-232C asynchronous interface
with the following characteristics:
Data format
1 start bit
Data word length: 8 bits
Odd, even or no parity
1 stop bit
Signal level
Mark (1) -3 V to -27 V
Space(O) +3V to +27 V
The Serial Interface
C - 3
Summary of Contents for EX-1000
Page 1: ......
Page 11: ......
Page 29: ...1 18 Setting Up the Printer ...
Page 38: ......
Page 46: ...3 8 Using the EX with Application Programs ...
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Page 57: ...5 6 EX Printer Features ...
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Page 81: ...Command Summary A 5 ...
Page 82: ...A 6 Command Summary ...
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Page 123: ...Table B 1 Epson mode characters B 2 Character Tables ...
Page 124: ...Table B 1 continued Character Tables B 3 ...
Page 125: ...Table B 1 continued B 4 Character Tables ...
Page 126: ...Table B 1 continued Character Tables B 5 ...
Page 127: ...Table B 1 continued B 6 Character Tables ...
Page 128: ...Table B 1 continued Character Tables B 7 ...
Page 129: ...Table B 1 continued B 8 Character Tables ...
Page 133: ...Table B 4 IBM printer emulation mode characters B 12 Character Tables ...
Page 134: ...Table B 4 continued Character Tables B 13 ...
Page 135: ...Table B 4 continued B 14 Character Tables ...
Page 137: ...Table B 4 continued B 16 Character Tables ...
Page 139: ...Table B 4 continued B 18 Character Tables ...
Page 151: ...D 8 Problem Solving and Maintenance ...
Page 157: ...E 6 Defaults and DIP Switches ...
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Page 173: ...G 8 Technical Specifications ...
Page 183: ...IN 4 Index ...
Page 184: ...Quick Reference ...
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