14.1 Error Codes, Reliability Codes
Reliability codes (read via the Reliability property) are as follows:
Configuration property fault (80)
BACnet client read/write timeout (82)
BACnet client received error response from slave (83)
If the object’s reliability indicates code 83, meaning an error code was returned by a
remote BACnet device, the actual code returned can be learned by reading the local
object’s properties 830 (class) and 831 (code).
14.2 Auto-Reset Errors
Reliability codes will “latch” by default and require that you read the Reliability
property in order to reset it to zero, assuming the problem has gone away. Once the
non-zero reliability code has been read (by reading the Reliability property), it will
reset to zero the next time the object is updated, provided the problem has been
resolved.
Since many systems do not automatically read Reliability codes, but do automatically
respond to the Fault Status Flag associated with the non-zero reliability code, an
auto-reset option is available. When set, reliability codes will return to zero as soon as
the problem has been resolved, regardless of whether the non-zero reliability code
was ever acknowledged by reading it.
14.3 MS/TP Trouble Shooting - Connecting the USB Adapter
(a) Is the yellow LED next to the USB cable lit? If not, the PC does not recognize the
adapter. Verify installation. Verify that MTX002 shows up as a Port in the Device
Manager on your PC. The yellow LED next to the USB cable must be lit before
continuing.
(b) Open the configuration tool. Select the port number indicated in the Device
Manager. Select a known baud rate, max master setting, and unused Mac address.
Click ‘Connect’. Does the log window show “USB is responding”? If not, close the
configuration tool, then disconnect and reconnect the USB cable to force a hard reset
14. Trouble Shooting
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