Carrier WSHP Open v3 Integration Manual page 28

Troubleshooting
In the above example, MAC address 16 knows to pass the token back to MAC address 1, instead of counting up to
MAC address 127. Each MS/TP master node on the network must have their Max Masters set to this same value.
The default is 127.
Max Info Frames - defines the maximum number of responses that will be sent when the WSHP Open receives the
token. Any positive integer is a valid number. The default is 10 and should be ideal for the majority of applications.
In cases where the WSHP Open is the target of many requests, this number could be increased as high as 100 or
200.
NOTES
•
MS/TP networks can be comprised of both master and slave nodes. Valid MAC addresses for master nodes
are 0 – 127 and valid addresses for Slave nodes are 0 - 254.
• If the third party attempts to communicate to the controller but does not get a response, make sure the
controller is set as a BACnet MS/TP (m) master. The BACnet software asks the controllers, "Who Is?" This is
to auto-locate devices on the network. Only controllers set as masters will answer this request.
• See Appendix A (page 28) for Points Mapping tables.
• See Appendix B (page 32) for the BACnet Protocol Implementation Conformance Statement (PICS).
Editing MS/TP Properties:
From the default screen, press any key to continue.
1
Click the LOGIN button and enter a password of 1111.
2
Click OK.
3
Click the System Settings button.
4
Click the down arrow. scroll to the Network menu and press the ENTER button. The BACnet Settings are now
5
shown, Max Masters and Max Info Frames.
If you want to edit Max Masters:
Click the ENTER button to enter edit mode.
1
Use arrow keys and keypad to either type in a new value (1-127), or click the DECR/INCR buttons to
2
decrease/increase the value, respectively.
Click OK to accept the change.
3
If you want to edit Max Info Frames:
Click the down arrow and then press the ENTER button to enter edit mode.
1
Use arrow keys and keypad to either type in a new value (1-999), or hit the DECR/INCR buttons to
2
decrease/increase the value, respectively.
Click OK button to accept the change.
3
24 WSHP Open v3