Trouble shooting the configuration tool
RS-485 converters connected to a real RS-232 COM port on your PC do best in running the MS/TP stack. Although we have tested USB "dongles" and found they do "function", they perform poorly and result in a lot of network dropouts. (The ideal solution is actually a hardware RS-485 card plugged into a desktop PC.)
Follow the startup sequence shown on the startup page if you haven't already. This will get you through the initial "get connected" phase. IMPORTANT: A significant percentage of support calls come from people who simply did not read or follow this page!
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Using the XP Converter? What do the LEDs tell you?
The yellow LED should be on always indicating power is present. The green LED tells you communications are coming from the AddMe. Diagnostic: Disconnect the PC from the XP converter, and power up the AddMe. If the BACnet MS/TP network is wired correctly and power is on at the AddMe, the green LED should be on/flickering (without the PC connected at all). The red LED tells you communications are coming from the PC. Diagnostic: Disconnect or power off the AddMe, but connect the PC. Start the BAConfig.exe program, select the appropriate COM port, and click the Init Stack button. The red LED should be on/flickering (without the AddMe connected at all). If you do not pass the above two diagnostics, stop here, and sort out the wiring problems before proceeding. You cannot proceed to configure the device without at least passing the above two tests. Once passing the above two tests, reconnect both the PC and the AddMe. All of the LEDs should be mostly on (or at least flickering rapidly) if you are communicating. MAKE SURE you are connected to the BACnet port when attempting to use the BAConfig tool. The BACnet port is the NET connection next to power. The connector on top is Modbus, and you cannot configure this device via Modbus. |
Trouble shooting the BACnet device
Error codes returned via BACnet consist of an error class and code. The most common errors are listed below with class in parenthesis followed by code. Some applications will interpret these for you and provide a text description.
| (property) code 9 | Invalid data type | |
| (property) code 32 | Unknown property | |
| (property) code 37 | Value out of range | |
| (property) code 40 | Write access denied | |
| (property) code 42 | Invalid array index | |
| (client) code 30 | Timeout | |
| (client) code 31 | Unknown device | |
| (object) code 31 | Unknown object | |
| (service) code 7 | Inconsistent parameters | |
| (service) code 10 | Invalid access method | |
| (service) code 29 | Service request denied | |
| (abort) code 4 | Segmentation not supported | |
| (reject) code 4 | Invalid tag | |
| (security) code 26 | Password failure | |
| (resource) code 0 | Resource error – “other” |
Note: Timeout or "Resource - other" errors most often indicate Windows has gotten out of sync in its efforts to do character processing quickly enough. Try clicking the Resync button. If that fails to resume communication, you may need to restart the configuration program (to cause a complete hard reset of the MS/TP stack on the PC).