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HP 27130A
Subfunction 18. Character Handshake Timer. Subfunction 18 sets the handshake timer in
increments of 1 second. The timer can be programmed from 0 to 255 seconds.
The timer is used for either the ENQ/ ACK or device X -ON/X -OFF handshake. Because there is
only one timer per port, the handshake for which the timer is used is selected by WCC SF 8. If the
timer selected by WCC SF 8 is not the handshake enabled by WCC SF 9, no timer will be used.
Subfunction 21. Host Interrupt Mask. Subfunction 21 enables the specified unsolicited interrupt to
the host.
Data block
byte 0
transmit buffer is empty
reserved
signal character 1
signal character 2
signal character 3
signal character 4
4-35
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