Rockwell Automation 842E EtherNet/IP Absolute Encoder User Manual - Manual (Page 22)

14 Rockwell Automation Publication 842E-UM001A-EN-P May 2012
Chapter 3 EtherNet/IP overview
Class attributes of the position sensor object
(1) Nonvolatile
Instance Services of the position sensor object are automatically populated in the
explicit message instruction configuration
Instance services of the position sensor object
1Instance attributes of the position sensor object
Num
(dec) Required/
optional Access
rule
Name Data type Description Default
1 Required
(implemented) Get Revision INT Object revision no 0x00 02
2 Implemented Get Max instance INT Max. instance number of an object
in this class 0x00 01
3 Implemented Get Number of
instances INT Number of object instances in this
class 0x00 01
6 Implemented Get Maximum ID
number class
attributes INT Highest implemented class ID 0x00 64
7 Implemented Get Maximum ID
number
instance
attributes INT Highest implemented instance
attribute ID 0x00 7A
100 Get NV
(1)
Encoder
firmware
version ARRAY
of bytes
aa.bb: major revision
minor revision
dd.mm.yy: day.month.year 842eaa.bb
dd.mm.yy
Instance Service name Description
0x0E Get_Attribute_Single Returns value of attribute
0x10 Set_Attribute_Single Sets value of attribute
Attribute ID
(dec) Attribute ID
(hex)
Access
rule
(1)
NV /
V
(2)
Name Data type Description
Min. / max
(default)
1 1 Get V Number of attributes INT Number of supported attributes in this
class 0x0039
2 2 Get V Attribute list ARRAY
of byte List of supported attributes –
10 A Get V Position value signed DINT Current position value (32 Bit) none
11 B Get NV Position sensor type
(see following table, encoder ID) INT Device Type
0x01: Single-turn absolute encoder
0x02: Multi-turn absolute encoder Min 0x00 01
Max 0x00 02
(0x00 02)
12 C Set NV Direction counting toggle, code
sequence (CS) BOOL Definition of direction of incrementing
counts (10)
0: CW
1:CCW (0: CW)
13 D Set NV Commissioning diagnostic control
(encoder position test) BOOL ON: 1 Encoder diagnostics possible
OFF: 0 No diagnostics implemented (OFF: 0)
14 E Set NV Scaling function control (SFC) BOOL ON: 1 calc. value (from 16+42)
OFF: 0 phys. resolution [steps] (OFF: 0)
15 F Set NV Position format ENG
UNIT Format of position value
(e.g., arcsec or steps)
Engineering unit: 0x1001 (counts) (0x1001)