Printronix SL4M User Manual page 122

Chapter 4
INTERFACE Menu
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Idle Response. This option is for the Series1 protocol.
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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.
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Printer Status
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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.
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Disable (factory default).
Enable. The printer sends a response character every two seconds
while the number of valid bytes in the buffer is less than 75 percent of
the buffer size.
Table 10. One Char Enquiry Response Characters
Printer State
Online and Buffer Not Full
Online and Buffer Full
Offline and Buffer Not Full
Offline and Buffer Full
Disable (factory default). Printer status ignored.
ENQ/STX (see Table 11).
ENQ (see Table 12).
Response (hex)
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23
20
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