Centronics Parallel Interface Signals
281
Centronics Parallel Interface Signals
Table 12. Centronix Parallel Interface Signals
Signals
Purpose
Data Lines 1 through 8
Provide eight standard or inverted levels from
the host that specify character data, plot data,
or a control code. Data Line 8 allows access to
the extended ASCII character set. You may
enable or disable this line via the Data Bit 8
parameter on the Centronics Parallel submenu.
Data Strobe
Carries a low true, 100 ns minimum pulse from
the host that clocks data into the printer.
Acknowledge
A low true pulse from the printer indicating the
character or function code has been received
and the printer is ready for the next data
transfer.
Online
A high true level from the printer to indicate the
printer is ready for data transfer and the PAUSE
key on the control panel has been activated.
When the printer is in online mode, it may
accept data from the host.
Paper Empty (PE)
A high true level from the printer to indicate the
printer is in a paper empty or paper jam fault.
Busy
A high true level from the printer to indicate the
printer cannot receive data.
Prime
A high true level from the host to indicate the
printer should perform a warm start (printer is
reset to the power-up configuration values).
Paper Instruction (PI)
Carries a VFU signal from the host with the
same timing and polarity as the data line.
Fault
A low true level from the printer indicates a
printer fault.
Summary of Contents for 5504-R40
Page 1: ...InfoPrint 6700 ES Series Thermal Printer G550 1271 01 User s Manual...
Page 2: ......
Page 3: ...InfoPrint 6700 ES Series Thermal Printer G550 1271 01 User s Manual...
Page 10: ...Table of Contents...
Page 163: ...163 IPDS Setup Print IPDS Fonts cont Figure 4 IPDS Fonts 3816 Emulation Sample Printout...
Page 266: ...266 Chapter 3 DATE...
Page 278: ...278 Chapter 4 Select And Print Downloaded TrueType Fonts...
Page 288: ...288 Chapter 5 RS 232 And Optional RS 422 Serial Interfaces...
Page 332: ...332 Chapter 6 Restore The Printer To Operation...
Page 340: ...340 Appendix A...
Page 362: ...362 Appendix D Removing The Media Cutter...
Page 366: ...366 Appendix E Installing The Media Cutter Tray...
Page 378: ...378 Communication statements...
Page 384: ...384 Appendix...
Page 401: ......