ACC Error Guide

ZCOM Status Codes
Terminal I/O Status Codes
Chapter 3 65
IO_UNA_CTL(26) Unable to process control write
A control write was requested but the multiplexer is
unable to process the request at this time (possibly due
to a shortage of resources such as buffers).
IO_LTERM_DSBL(27) Logical terminal disabled
This logical terminal must be enabled before a data
may be transmitted on it.
IO_LTERM_DOWN(28) Logical terminal down
The logical terminal is currently down and cannot have
data transmitted over it.
IO_RX_BREAK(29) BREAK received from terminal
For a character mode asynchronous protocol, the
“break” key has been pressed.
IO_TEST_DONE(30) Port test complete
This status is returned from the diagnostic module
when the requested port test is complete.
IO_NO_SPACE(31) No transmit buffers
There are no free transmit buffers on this port to hold
and transmit this message.
IO_LONG_TX(32) Transmit length too long
There are insufficient free transmit buffers on this port
to hold and transmit the whole message.
IO_INV_TERM(33) Invalid MUX terminal number
A request has been made to a terminal which has not
been initialized.
IO_NO_PORT(34) Terminal not initialized
A request has been made to a terminal which has not
been initialized. That is, a zcntl() request to set the
terminal parameters (ZCOM_MRQCODE_TERM) has
not been issued which assigns the port number this
terminal is associated with.