Daikin IM 837-2, Руководство по установке и обслуживанию

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Set up Network Communications
www.DaikinApplied.com 11 IM 837-2 • MICROTECH II CHILLER UNIT CONTROLLER
Dynamic IP Address - DHCP
BACnet IP networks with DHCP use a server (typically a router
or gateway) to automatically request network configuration
parameters, such as IP addresses, to all devices. DHCP-
enabled networks eliminate the need for a user to configure
these settings manually since IP Addresses and other
parameters are determined dynamically by the server.
There are several important aspects to consider with DHCP-
enabled networks:
Aspect Considerations
BBMDs DHCP can not be used together with BBMDs,
as the IP addresses are configured as static
addresses and cannot change during operation.
Alarm
recipient
In BACnet, alarm recipients are entered with
their “Device Object Identifier” or their BACnet
address. The IP address is part of the BACnet
address and may not be changed for the alarm
recipient. For this reason, option “Device Object
Identifier” must always be used.
Access
rights
If access rights are assigned based on IP
address, such as firewalls, the address must
be static. Access rights are based off of the
UDP Port Number (ex. UDP 47808) or the MAC
Address of the communication module.
IP version The communication module supports IP Version
4, (i.e. IP devices with 32 bit addresses).
The communication module supports DHCP (Dynamic Host
Configuration Protocol) IP addressing. By default, this feature
is disabled. To configure the communication module to use the
DHCP feature, write “DHCP” as the IP address. In a DHCP-
based network, the communication module automatically
receives the required parameters from the DHCP server.
Consult with your network administrator for the information on
your network settings.
Multiple IP Subnets - BBMD
A BACnet/IP network may consist of multiple IP subnets
assigned the same BACnet network number. In this case,
a BBMD (BACnet Broadcast Management Device) allows
broadcasts to be transmitted to all other BBMDs on the BACnet
network. BBMDs allow devices on one network to distribute
broadcasts, or communicate, across multiple subnets. A
BBMD also provides for foreign device registration. This allows
a device on one network to communicate with a device on
another network by using the BBMD to forward and route the
messages.
The communication module can be registered as a foreign
device with a BBMD device. This is done by providing the
module with the IP Address and Foreign Device Time-To-Live
setting of the BBMD. Once entered, the module automatically
registers with the BBMD at the IP Address specified within the
Foreign Device Time-To-Live setting. See Figure 12 for BBMD
settings available on the BACnet Web Configuration Properties
page.
BACnet over Ethernet Addressing
The Ethernet MAC address of the communication module is
a six-octet address assigned when it was manufactured. It is
fixed and cannot be changed. Use this address to access the
chiller unit controller on a BACnet Ethernet network .
BACnet Web Configuration Interface
Overview
The communication module uses the BACnet Web
Configuration Interface, a browser-based tool, to configure
BACnet settings. The interface is organized by HTTP pages
located within a series of tabs. Each HTTP page displays
network properties, BACnet addressing parameters, and
system configuration options Specifically, the interface can be
used to do the following:
• Adjust network settings such as IP Address and Device
Instance Number (particularly with multiple chillers on a
single network.)
• Configure parameters
• Test and verify communication with the chiller unit
controller
• Establish user(s) and password access
•
Set BACnet Alarm notification and communication module
clock
• Upgrade communication module firmware
• View all variables mapped to the unit controller
Figure 12 shows the main page of the user interface. This is
a read-only screen with a number of setup parameters. The
parameters that require setting depend on the data link layer (IP
or Ethernet) of the BAS network. The items that appear on the
page are relative to the selected BACnet layer. Device, Date/
Time, and Alarms require settings for all BACnet networks.
BACnet via Ethernet may not require network settings. However,
BACnet IP does require network settings. Note that the example
shown in Figure 12 is for BACnet IP.
Table 4 lists the primary network parameter settings and
Device Object properties supported by the unit controller that
are available via the BACnet Web Configuration Interface.
NOTE: The Device Instance, BACnet IP Address, IP Subnet
Mask, UDP Port, and IP Router Address can only be
set using the BACnet Web Configuration Interface.
Getting Started
Required Tools
• PC with Ethernet interface and TCP/IP protocol capability
• Standard web browser such as Internet Explorer™
• Ethernet cable (either an Ethernet crossover cable
for direct connection or a standard Ethernet cable for
connecting through a hub).