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SPECIFYING FORMS
48
Busy Signal Polarity
Busy Polarity
Low
Possible Values: Lo*, Hi
This item selects the polarity of the busy signal (pin 11 of the RS-232C
interface). Busy is set whenever the printer is offline, the serial input buffer
is full, or another interface port is currently active.
Data Terminal Ready
DTR
Power On/Off
Possible Values: Power On/Off*
Online/Offline
Busy/Not Busy
Selects the condition to be reflected by the DTR signal (pin 20 of the RS-
232C interface). In most cases, especially those involving a MODEM, this
signal should be set to indicate Power On/Off. Selecting
Online/Offline will reflect only the condition indicated and does not
reflect a buffer full condition. Busy/Not Busy will cause DTR to
indicate both the online/offline status and buffer full condition (see “Busy
Polarity” above).
XON/XOFF Handshaking
XON/XOFF
Off
Possible Values: Off*, On
Enables or disables the transmission of the XON and XOFF characters
from the printer to the host to control data flow to the printer. XOFF will
be sent whenever the printer goes offline or the serial buffer is full. XON
will be sent when the printer is again ready to receive characters.