Printronix SL4M - Manual (Page 137)

INTERFACES Submenus
137
• One Char Enquiry . The One Char Enquiry mode uses the Poll Character
to detect a request from the host and sends a response back to the host.
This option also allows you to turn on and off this feature.
The Poll Character is removed from the data stream. If the Data Protocol
is set to ETX/ACK, ACK/NAK, or Series1, One Char Enquiry is
automatically disabled.
The options are Disable (factory default) and Enable.
• Printer Status
• Disable (factory default). Printer status ignored.
• ENQ/STX (see Table 11).
• ENQ (see Table 12).
When enabled, the printer will respond to an ENQ character by sending a
status byte to the host. The type of status byte is determined by a Front
Panel Menu selection. The selections allowed are ENQ/STX and ENQ.
The ENQ is removed from the data stream.
Table 10. One Char Enquiry Response Characters
Printer State Response (hex)
Online and Buffer Not Full 22
Online and Buffer Full 23
Offline and Buffer Not Full 20
Offline and Buffer Full 21
Table 11. ENQ/STX Status Byte
Bit Printer Status
0 Set when the printer is not online or the buffer is full.
1 Set when the printer is offline.
2 Clear during a paper out or RibbonMinder fault.
3 Always set.
4 Set during a Head Open fault.
5 Set during a buffer overflow fault.
6 Set during a parity or framing error fault.
7 Always clear.