BACnet Quick-Start Sequence
The following steps summarize the process for enabling and
configuring BACnet on the MD4:
1 . Enable BACnet protocol: Set drive parameter 9802,
COMM PROTOCOL SEL = BACNET (5) .
NOTE:
If you cannot see the desired selection on the panel,
your drive does not have that protocol software in the
application memory .
•
To confirm this selection, read drive parameter 5301,
EFB PROTOCOL ID . It should read x5xx (where “x” is
any value) .
2 . Place the BACnet channel in “reset”: Set drive parameter
5302, EFB STATION ID = 0 .
• This setting holds the BACnet communication channel
in reset while remaining settings are completed .
3 .
Define the MS/TP baud rate.
• Set drive parameter 5303, EFB BAUD RATE =
appropriate value .
4 .
Define the Device Object Instance ID.
•
To define a specific device object instance value,
use drive parameters 5311 and 5317 (object
instance values must be unique and in the range 1 to
4,194,303) .
• To use the drive’s MS/TP MAC ID as the device object
instance value, set drive parameter 5311 and 5317 =
0 .
5 .
Define a unique MS/TP MAC ID. Set drive parameter
5302, EFB STATION ID = appropriate value .
• Once this parameter is set to a non-zero value,
current BACnet settings are “latched” and used for
communication until the channel is reset .
• In order to participate in MS/TP token passing, the
MAC ID used must be within the limits defined by
other masters’ “Max Master” property .
6 .
Confirm proper BACnet communication.
• When BACnet communication is operating properly,
drive parameter 5316, EFB PAR 16 (the MS/TP token
counter), should be continually increasing .
• Drive parameter 5306, UART ERRORS, should be
stable .
Protocol Implementation Conformance Statement (PICS)
PICS Summary
BACnet Standard Device Profile
This version of MD4 BACnet fully conforms to the ‘Application-
Specific Controller’ standard device profile (B-ASC).
Services Supported
The following services are supported by the MD4:
• I-Am (Response to Who-Is, also broadcast on power-up
& other reset)
• I-Have (Response to Who-Has)
• ReadProperty
• WriteProperty
• DeviceCommunicationControl
• ReinitializeDevice
Data Link Layer
The MD4 implements MS/TP (Master) Data Link Layer . All
standard MS/TP baud rates are supported (9600, 19200,
38400 & 76800) .
MAC ID / Device Object Instance
The MD4 supports separate MAC ID and Device Object
Instance parameters:
• Set the MAC ID using drive parameter 5302 . Default:
5302 = 12? .
• Set the Device Object Instance ID using drive parameters
5311 and 5317 .
Default: Both 5311 and 5317 = 0, which causes the MAC
ID to “double” as the Device Object Instance . For Device
Object Instance values not linked to the MAC ID, set ID
values using 5311 and 5317:
—
For IDs in the range 1 to 65,535: Parameter 5311sets
the ID directly (5317 must be 0) . For example, the
following values set the ID to 49,134: 5311 = 49134
and 5317 = 0 .
—
For IDs > 65,335: The ID equals 5311’s value plus
10,000 times 5317’s value . For example, the following
values set the ID to 71,234: 5311 = 1234 and 5317 =
7 .
Max Info Frames Property
Configure the Device Object Max Info Frames property using
drive parameter 5312 . Default: 5312 = 1 .
Max Master Property
Configure the Device Object Max Master property using drive
parameter 5313 . Default: 5313 = 127 .
MS/TP Token Counter
Parameter 5316 stores the count of MS/TP tokens passed to
the associated node .
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OM 1190-1 • MD4 VFD
Summary of Contents for ACS320
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