VLT
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AutomationDrive EtherNet/IP
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20
How to Control the FC 100/200/300
I/O Assembly Instances
I/O Assembly Instances are a number of defined process control objects with defined content
comprising control and status information.
Unlike DeviceNet it is possible to run with asymmetrical instances. E.g. 101/153 = 8 bytes/20 bytes.
It is not possible to mix instances across profiles, e.g. 20/100.
Assembly instances must be consistent to the: ODVA or FC profile.
The controlling instance can be read in par. 12-20
Control Instance.
The figure below shows the I/O Assembly Instance options for controlling and monitoring the FC
100/200/300 drive.
Profile
(par. 8-10)
Direction
Instance
(decimal)
Size
(bytes)
Data
20 4
Originator -> Target
21 4
70 4
ODVA
Target -> Originator
71 4
100 4
101 8
Originator -> Target
103 20
150 4
151 8
FC
Target -> Originator
153 20