Reference Guide

ZCOM Tables and Data Structures
Physical Terminal Tables
Chapter 376
PTCWCT - Terminal control write counter
This counter is incremented by the driver every time a control write
buffer for this terminal is transferred to the Mux interface card.
PTTXCT - Terminal transmit message counter
This counter is incremented by the driver every time a transmit buffer
for this terminal is transferred to the Mux interface card.
PTRXCT - Terminal receive message counter
This counter is incremented by the driver every time a receive message is
transferred from the Mux interface card for this terminal.
PTERCT - Terminal error message counter
This counter is updated by the driver after each $STDT buffer has been
transferred from the Mux interface card. The $STDT buffer contains the
number of errors that have occurred for a terminal since the last $STDT
buffer was sent to the driver.