Epson EPL-7500 User Manual - Page 187
Serial interface, Interface timing, Signal level, Data format
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Interface timing The figure below shows the timing for the parallel interface. ACK pulse Options for when the Busy signal goes inactive delay = 0 delay = -5 delay = +5 Signal level: TTL compatible Serial interface The printer's resident serial interface can be set for either RS-232 or RS-422 operation. These interfaces have the following characteristics. Data format Word length: 7 or 8 bits Parity: Space or none, odd or even, mark or none Stop bits: 1 or 2 Printer ready protocol: enabled (DTR and XON/XOFF protocol set to ON.) The data format can be set using functions and menu items in SelecType. Technical Specifications 8-13
Interface timing
The figure below shows the timing for the parallel interface.
ACK pulse
Options for when the Busy signal goes inactive
delay = 0
delay =
-5
delay = +5
Signal level:
TTL compatible
Serial interface
The printer’s resident serial interface can be set for either
RS-232
or
RS-422
operation. These interfaces have the following
characteristics.
Data format
Word length:
7
or
8
bits
Parity:
Space or none, odd or even, mark or none
Stop bits:
1 or
2
Printer ready protocol: enabled (DTR and XON/XOFF protocol
set to ON.)
The data format can be set using functions and menu items in
SelecType.
Technical Specifications
8-13