GE Industrial Solutions AF-650 GP DeviceNet - Manual (Page 35)

The State – Transition diagram below shows how the frequency converter will respond to the various command attributes associated with Class ID 0x29.
5.3.18 Class ID 2Ah AC/DC Drive Object
Use this object to set and read out a range of AF-600 FP or AF-650 GP drive control and status information. The attributes supported for this class are listed below.
5.3.19 Class ID 0x2A
Attribute Access Name Data
type Min/
Max Default Description
3 Get At Reference Bool 0-1 0 = Drive not at reference
1 = Drive at reference
4 Get/Set Net REf Bool 0-1 1 0 = Set reference at non-DeviceNet reference
1 = Set reference at DeviceNet reference
6 Get/Set Drive Mode USINT 0-1 1 0 = Vendor specific mode
1 = Open loop speed (Frequency)
2 = Closed loop speed control
7 Get Speed Actual INT RPM/2 Speed Scale Actual drive speed
(best approximation)
8 Get/Set Speed Ref INT RPM/2 Speed Scale Speed reference
22 Get/Set Speed Scale SINT -128-127 Speed scaling factor
29 Get Ref from Net Bool 0-1 0 = Local speed reference
1 = DeviceNet speed reference
5.3.20 Class ID 2Bh (Acknowledge Handler Object)
Use this object to manage message reception acknowledgements, necessary for Change-Of-State support.
The attributes supported for this class are listed below.
5.3.21 Class ID 0x2B
Attribute Access Name Data
type Min/
Max Default Description
1 Set ACK Timer UINT 0-65535 16 Time top wait for ACK before resending
2 Get/Set Retry Timer USINT 0-255 1 Number of ACK-timeouts to wait before producing.
RetryLimit_Reache event.
3 Get/Set COS UINT Connection instance ID
AF-600FP /650 GP DeviceNet Operating Instructions
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