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ED 15117
communications are disabled. However, once a valid IP address is received, BACnet/IP
communications are then enabled. Changing the IP address may affect the operation of other BACnet
devices on the network. This parameter can only be accessed and configured via the unit controller
OITS panel.
Subnet Mask
The Subnet Mask is read from a parameter in the Magnitude Chiller Unit Controller during the BACnet
communication module’s initialization phase. The BACnet communication module continues to poll
the Subnet Mask parameter during run-time. If the Subnet Mask is changed at the unit controller during
run-time, the update is automatically applied to the BACnet communication module as soon as the
change is received. The validity of the Subnet Mask is verified against the IP address. If the Subnet
Mask is not valid, the BACnet communication module does not enable BACnet/IP communications
and the device does not initiate or respond to BACnet messages. If the Subnet Mask is changed at run-
time and is not valid, the BACnet/IP communications are disabled. However, once a valid Subnet
Mask is received, BACnet/IP communications are then enabled. Changing the Subnet Mask may affect
the operation of other BACnet devices on the network. This parameter can only be accessed and
configured via the unit controller OITS panel.
UDP Port
The UDP Port is read from the Magnitude Chiller Unit Controller during the BACnet communication
module’s initialization phase. The BACnet communication module continues to poll the UDP Port
parameter during run-time. If the UDP Port is changed at the unit controller during run-time, the update
is automatically applied to the BACnet communication module as soon as the change is received.
Changing the UDP Port may affect the operation of other BACnet devices on the network. This
parameter can only be accessed and configured via the unit controller OITS panel.
Default Gateway Address
The default gateway address is read from a parameter in the Magnitude Chiller Unit Controller during
the BACnet communication module’s initialization phase. The BACnet communication module
continues to poll the default gateway address parameter during run-time. If the default gateway address
is changed at the unit controller during run-time, the update is automatically applied to the BACnet
communication module as soon as the change is received. Modifying the default gateway address may
affect the operation of other BACnet devices on the network. This parameter can only be accessed and
configured via the unit controller OITS panel.
BBMD Address
The BBMD address is read from the Magnitude Chiller Unit Controller during the BACnet
communication module’s initialization phase. If the BBMD address is not 0.0.0.0, the BACnet
communication module sends a Register-Foreign-Device message to the address. If the result code
returned is X’0000’, the BACnet communication module renews the registration at the period defined
by the Foreign Device Time-To-Live value. The BACnet communication module continues to poll the
BBMD address parameter during run-time. If the BBMD address is changed at the unit controller
during run-time, the update is automatically applied to the BACnet communication module as soon as
the change is received. If the new value is 0.0.0.0, a Delete-Foreign-Device-Table-Entry message is
sent to the BBMD address. If the new value is non-zero, a Register-Foreign-Device message is sent to
the BBMD address. Changing the BBMD address may affect the operation of other BACnet devices
on the network. This parameter can only be accessed and configured via the unit controller OITS
panel.
