Class attributes, Instance attributes, Class attributes instance attributes – Rockwell Automation 25-COMM-D PowerFlex 525 DeviceNet Adapter User Manual
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Rockwell Automation Publication 520COM-UM001A-EN-E - April 2013
105
DeviceNet Objects
Appendix C
Class Attributes
Instance Attributes
Attribute ID
Access Rule
Description
1
Read
Revision
2
Read
Maximum Instance
3
Read
Number of Instance
100
Read/Write
Timeout
Attribute ID
Access Rule
Name
Data Type
Description
1
Get
Bad Flag
BOOL
If set to 1, then attribute 4 may contain invalid data.
0 = good
1 = bad
2
Get
Direction BOOL
Direction of data transfer
0 = Produce Register (drive to network)
1 = Consume Register (network to drive)
3
Get
Size
UINT
Size of register data in bits
4
Conditional
(1)
(1) The access rule of Set is optional if attribute 2, Direction = 1. If Direction = 0, the access rule is Get.
Data
Array of Bits
Data to be transferred
IMPORTANT
Setting the “Data” instance attribute can be done only when the Control
Timeout (class attribute 100) has been set to a non-zero value.