Technical data

64 OM 1191
Embedded Fieldbus
Protocol Implementation Conformance Statement (PICS)
PICS Summary
BACnet Standard Device Prole. This version of MD5
BACnetfullyconformstothe‘Application-Specic
Controller’standarddeviceprole(B-ASC).
Services Supported. The following services are supported
by the MD5:
• 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 MD5 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 MD5 supports
separate MAC ID and Device Object Instance parameters:
• Set the MAC ID using drive parameter 5302. Default:
5302 = 128.
• 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 5311 sets
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.ConguretheDeviceObject
Max Info Frames property, page 38, using drive parameter
5312. Default: 5312 = 1.
Max Master Property.ConguretheDeviceObjectMax
Master property using drive parameter 5313, page 38.
Default: 5313 = 127.
MS/TP token counter
Parameter 5316 stores the count of MS/TP tokens passed to
the associated node.