ABB ACH550-01-04A1-4+B055 [19/32] Technical data

ACH550 BACnet User’s Manual 19

Technical Data

Protocol Implementation Conformance Statement (PICS)

PICS Summary

BACnet Standard Device Profile

This version of ACH550 BACnet fully conforms to the 'Application-Specific

Controller' standard device profile (B-ASC).

Services Supported

The following services are supported by the ACH550:

• 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 ACH550 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 ACH550 supports separate MAC ID and Device Object Instance parameters:

• Set the MAC ID using drive parameter 5302. Default: 5302 = 1.

• Set the Device Object Instance using drive parameters 5311 and 5317. Default:

Both 5311 and 5317 = 0, which causes the MAC ID to “double” ast he Device

Object Instance. For Device Object Instance values not linked to the MAC ID, set

ID values using 5311 and 5317 = 0.

– For IDs in the range of 1 to 65,535: Parameter 5311 sets the ID directly (5317

must be 0). For example, the following values set the ID to 49134: 5311 =

49134 and 5317 = 0.

– For IDs > 65,535: 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.