Sierra Raven EDGE - Manual (Page 69)

Configuring Modbus/BSAP
Rev 3.0B Feb.08 65
The destination port for the modem at the host needs to match
the device port in use on all the modems at the remote sites.
For example, if the remote modem’s device port (see below) is
“12345”, then the Modbus host modem’s S53 destination port
should be set to “12345”.
Set the destination port (S53) to match the device port of the
host modem (*DPORT). Make sure the device port of the
remote modem (*DPORT) matches the destination port of the
host modem (S53).
2. Configure IP addresses for the host.
If the Host modem has a static IP address, enter it in the Desti‐
nation Address for S53.
Note: With a name instead of
IPs for the host modem, the
remote modems will query the
DNS server for the current IP
assigned to the host modem
before sending data back to the
host. If the modem at the host has a dynamic IP and is using IP
Manager, instead of an IP address for S53, specify the name of
the host modem (*MODEMNAME). If the remote modems are
using a different DDNS than the host modem, you will need to
specify the fully qualified domain name
(*MODEMNAME+*DOMAIN).
Note: Setting the Host modem IP address as the S53 Destination
Address provides a low level security. The modem will not forward
UDP traffic unless the source IP/port matches what is in S53.
However, if you set *AIP=1, the modem will forward UDP traffic from
any source IP address as long as it is accessing the modem on the
configured *DPORT.
3. Configure the default mode for start-up.
Each modem at the remote locations will need to be configured
to communicate with the modem at the host. In AceManager,
select UDP in the side menu.
Figure 8-7: AceManager: UDP