Mstp Port tab
These fields configure the BACnet/Mstp link layer used by the controller, providing that the Enabled property (in BACnet Network
tab) is set to
true.
Figure 208. Mstp Port tab
To access this view, click , followed by clicking the Mstp Port tab.
Properties
| Property | Value | Description |
|---|---|---|
| Enabled | true or false |
Turns the feature on (true) and off (false). |
| Status | read-only | Reports the condition of the entity or process at last polling.
{ok} indicates that the entity is licensed and polling successfully. {down} indicates that the last poll was unsuccessful, perhaps because of an incorrect property. {disabled} indicates that the Enable property is set to false. {fault} indicates another problem. Depending on conditions, multiple status flags may be set including {fault} and {disabled}, combined with {down}, {alarm}, {stale}, and {unackedAlarm}. |
| Fault Cause | read-only | Reports the reason why a network, component, or extension is in fault. Fault Cause is blank unless a fault exists. |
| Network Number | number from -1 to the BACnet network number for the network segment to which you are connecting | Sets the number of the network. If this is an existing BACnet installation, make sure to use the same network number already
in use. If this a new BACnet installation, choose this number (for example: 3)
|
| Port Name | text | Typically, you leave the Mstp Address at 0 (the default), and verify that no other MS/TP device on the trunk is addressed the same. If there is ever a “lost token,” the device with the lowest MAC address regenerates the token (and, in this case, the station). |
| Baud Rate | drop-down list | Selects the baud rate. |
| Mstp Address | number, in decimal, with a valid range from 0 (default) to 127 | Sets the Mstp address to a unique BACnet MAC address on that MSTP trunk. Each BACnet device on the MS/TP network segment must have a unique MAC address. |
| Max Master | Sets the maximum master device to the lowest known master device on the network, with possible room for expansion if needed. | |
| Max Info Frames | number up to 100 | Specifies how many messages are sent before passing the token. Increasing this value to 100 improves performance in some cases. |