The Set Handshake Mode 2 Instruction, Esc . I - HP 7470A Interfacing And Programming Manual

Parameter Usage in Plotter/ Computer Communication
With Handshake Characters with P10tte1'
Output
Parameter In Mode 1 In Mode 2 Commands
turnaround yes yes yes
delay
output trigger yes no yes
character
echo yes no yes
terminator
output yes no yes
terminator
output no no yes
initiator*
intercharacter yes yes yes
delay
*If an output initiator is required on enquiry responses, it should be specified as
the first character of the acknowledgment string and/ or the immediate response
string, depending on the system.
EXAMPLES See ESC . I and ESC . N.
The Set Handshake Mode2 Instruction,
ESC . I
DESCWPTIUN The set handshake mode 2 instruction, ESC . I, may be
used with the enquire/ acknowledge or Xon—Xoff handshake to establish
parameters for the plotter's communication format.
It establishes the data block size, the enquiry character, and
the acknowledgment string for the enquire/acknowledge handshake
when the computer expects only the turnaround delay, and not the
other parameters set by ESC . M, to be included in the response to the
enquiry character. It sets the Xoff threshold level and the Xon trigger
character for Xon—Xoff handshake.
SYNTAX . I[(<DEC>) ; (<ASC>) -,(<ASC>(; . . .<ASC>))]:
DEFAULT . I: (or . H1) Neither Xon—Xoffnor enquire/
acknowledge handshake is enabled. Block size is 80 bytes, and there is
RS-232-C/CCITT V.24INTERFACING 10-29