Table 7: BACnet Device Tab - Network Parameters and Options
Parameter/Field
Device Instance
1,2,3
MS/TP Station Address
1,3
MS/TP Baud Rate
1,2,3
Max Master
1,3
Max Info Frames
3
Object Name
Description
Location
Range: Refer to the BACnet
APDU Timeout
Range: Refer to the BACnet
APDU Retries
Password for Restart
UTC Offset
Daylight Savings Time
Enable/Disable Device
Instance Write
Range: Refer to the BACnet
Interval to send WhoIs
Firmware Revision
Application Software Version
Alarm Destination
Range: Refer to the BACnet
Alarm Process ID
Alarm Priorities Problem
Alarm Priorities Fault
Alarm Priorities Warning
Alarm Priorities Problem
Alarm Priorities Fault
Alarm Priorities Warning
Metric Units
Read Object List Button
IM 906-4 • MICROTECH II CHILLER UNIT CONTROLLER
Range/Default
Description
Device Instance number of the communication module. This must be unique throughout the entire
0-4194303
BACnet network. Changes to the Device Instance are made immediately after pressing Write. Upon
exiting the BACnet Configuration Tool, the last Device Instance is saved. The Device Instance field
Default: 3000
then populates with that value when the BACnet Configuration Tool is re-opened.
0-127
MS/TP MAC address of the communication module. Each device on the BACnet network must have a
unique MS/TP address. Changing the MAC Address requires a reboot of the communication module.
Default: 0
9600,19200,38400,76800
Data transfer speed (bps) of the BACnet MS/TP network. Changing the Baud Rate requires a reboot
of the communication module.
Default: 38400
0-127
Specifies the highest possible address for the master. Devices must be less than or equal to 127
(MS/TP only). Changing the Max Master requires a reboot of the communication module.
Default: 127
0-255
Specifies the maximum number of information frames the communication module may send before it
must pass the token (MS/TP only).
Default: 20
This name must be unique throughout the entire BACnet network. The last 6 characters of the default
Range and Default: NA
are the last 6 digits of the MAC Address, which is on a printed sticker affixed to the communication
module.
Range: NA
Describes the application running in the BACnet device. This field cannot be modified.
Default: McQuay Chiller IT
Rev 1.7
Up to 65 characters
Indicates the physical location of the chiller.
Default: varies
The amount of time between retransmissions of an APDU (Application Layer Protocol Data Unit)
Standard
requiring acknowledgment for which no acknowledgement has been received.
Default: 3000 milliseconds
Standard
The maximum number of times that an APDU can be retransmitted.
Default: 3
Allows the communication module to be reinitialized from the network. Leaving this field blank
Up to 9 characters
indicates that no password is required. If this field is modified, a password is then required before a
Default: 1234
BACnet client can re-initialize the communication module.
-720 to +720 minutes
Difference between the UTC and local time.
Default: 0 minutes
Yes or No
Must be set to No for a BACnet client to synchronize the time on the network.
Default: No
Range: NA
Either allows or prevents modification of the Device Instance number.
Default: Disable Device
Instance Write
Standard
Frequency at which the communication module sends WhoIs Requests.
Default:1 minute
0-255
Communication module firmware version number. This field cannot be modified.
Default: NA
0-255
The BACnet Application_Software_Version property of the Device Object. It reflects the current
version of the BACnet component of the communication module.
Default: NA
0 - 4194303
Device Object Instance number of the BACnet device that receives the alarm notification.
Default: 0
Process ID used at the receiving BACnet device to determine the response action to the alarm
Standard
notification. May be changed to suit the BAS preference.
Default: 0
0-255
Priority for Problem Alarms
Default: 0
0-255
Priority for Fault Alarms
Default: 0
0-255
Priority for Warning Alarms
Default: 255
0-255
Priority for Problem Alarms
Default: 0
0-255
Priority for Fault Alarms
Default: 0
0-255
Priority for Warning Alarms
Default: 255
This property is used only with centrifugal chillers. Changing the unit of measure does not affect the
Yes or No
Present Value property read from the chiller. Selecting Yes converts the Units and Relinquish Default
properties to metric of measure, while selecting No converts these properties to English. The units of
Default: No
measure must also be changed via the unit controller keypad/display.
Select the object to read from the drop-down arrow (appears on the top of all tabs).
16
Network Configuration
www.DaikinApplied.com
Need help?
Do you have a question about the MicroTech II and is the answer not in the manual?