Distech Controls ECLYPSE APEX, Руководство пользователя

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60 ECLYPSE APEX
Foreign Device Settings
Some BACnet/IP devices also support a feature called Foreign Device Registration (FDR). FDR allows
a BACnet/IP device to send broadcast messages to a device with BBMD enabled. The BBMD-enabled
device will then forward these broadcast messages to all other BBMDs and onto all other FDR de-
vices. If a subnet has only FDR supported devices, then it does not need a local BBMD. These de-
vices can register directly with a BBMD on another subnetwork.
Item Description
IP IP address of a controller (foreign device) located on another subnetwork.
Port Delay after which the foreign device is forgotten.
Time to Live
Time-to-live value that serves as a timestamp attached to the data. Once the timespan has elapsed,
data is discarded.
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Network MS/TP Ports
Some controller models support up to three RS-485 ports. Some controllers only support Modbus RTU
on its RS-485 port. See the controller’s datasheet for more information.
BACnet MS/TP and Modbus RTU communications are made by connecting directly to separate
RS-485 ports. On-board RS-485 Port is the controller’s onboard RS-485 port. When an ECY-RS485
expansion module is attached to the controller, ECY-RS485 Module Port 1 is port #1 and ECY-RS485
Module Port 2 is port #2 on that module. The following network configuration parameters are for an
RS-485 port that is used to communicate with BACnet MS/TP controllers.
Figure 46: Network MS/TP Ports
Item Description
On / Off
Enables/disables the controller’s BACnet MS/TP connection. If the controller has been configured to
use Modbus RTU, this option cannot be enabled. First disable Modbus RTU in EC-gfxProgram.
Network Number
Network number identifies a LAN for routing purposes. All controllers with the same network number
are members of the same logical BACnet network. See
Device Addressing .
Baud Rate Recommended baud rate setting is 38 400. See Baud Rate .
Mac Address ECY series controller’s MAC Address on the BACnet MS/TP Data Bus.
Max Master
When commissioning a BACnet MS/TP Data Bus, it is useful to start with the Max Master set to 127
so as to be able to discover all devices connected to the data bus. Then, once all devices have been
discovered and the MAC Addressing is finalized by eliminating any gaps in the address range, set the
Max Master (the highest MAC Address) to the highest Master device’s MAC Address number to
optimize the efficiency of the data bus. See
Setting the Max Master and Max Info Frames .
Max Info Frames
For the ECY series controller, this should be set to 20. See Setting the Max Master and Max Info
Frames .
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Apply Click Apply to apply and save the changes.
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