BACpypes3 Addresses
BACpypes3 addresses are used to communicate between BACnet devices directly (one local station to another) or through a router (a local station through one or more routers to another local station).
There are also special addresses to send a message to all of the stations on the local network (called a “local broadcast”), all of the stations on a specific network through one of more routers (called a “remote broadcast”) or to all of the stations on all of the networks (called a “global broadcast”).
Type |
Example |
Context |
|---|---|---|
Local Station |
12 |
ARCNET, MS/TP |
192.168.0.10 |
IPv4, standard port 47808 |
|
192.168.0.11/24 |
IPv4 CIDR, standard port 47808 |
|
192.168.0.12/255.255.255.0 |
IPv4 subnet mask, standard port 47808 |
|
192.168.0.13:47809 |
IPv4, alternate port |
|
192.168.0.14/24:47809 |
IPv4 CIDR, alternate port |
|
192.168.0.15/255.255.255.0:47809 |
IPv4 subnet mask, alternate port 47809 |
|
01:02:03:04:05:06 |
Ethernet address |
|
0x010203 |
VLAN address |
|
[fe80::9873:c319] |
IPv6 |
|
[fe80::9873:c319]:47809 |
IPv6, alternate port 47809 |
|
[fe80::9873:c319/64] |
IPv6 network mask, standard port 47808 |
|
enp0s25 |
Interface name (ifaddr) |
|
Local Broadcast |
* |
|
Remote Station |
100:12 |
ARCNET, MS/TP |
100:192.168.0.16 |
IPv4, standard port 47808 |
|
100:192.168.0.17:47809 |
IPv4, alternate port 47809 |
|
100:0x010203 |
VLAN address |
|
Remote Broadcast |
100:* |
|
Global Broadcast |
*:* |
BACpypes3 has a special addressing mode called route aware that allows applications to bypass the router-to-network discovery and resolution process and send a message to a specific router.
Type |
Example |
Context |
|---|---|---|
Remote Station |
200:12@192.168.0.18 |
ARCNET, MS/TP via IPv4 |
200:192.168.0.19@192.168.0.20 |
IPv4 via IPv4 |
|
200:0x030405@192.168.0.20 |
VLAN via IPv4 |
|
Remote Broadcast |
200:*@192.168.0.21 |
ARCNET, MS/TP via IPv4 |
Global Broadcast |
*:*@192.168.0.22 |
all devices via IPv4 |