B-8
DeviceNet Objects
22
Velocity value
Get
DINT
This is the value of the current velocity according to unit type in
'VELOCITY FORMAT'
23
Minimum
velocity
Get/Set
DINT
Value of minimum velocity limit according to unit type of
'VELOCITY FORMAT'. A 'VELOCITY VALUE' under this limit will
cause a 'Min. Velocity Underrun' warning and set the warning flag.
24
Maximum
velocity
Get/Set
DINT
Value of maximum velocity limit according to unit type of
'VELOCITY FORMAT'. A 'VELOCITY VALUE' over this limit will
cause a 'Max. Velocity Exceeded' warning and set the warning
flag.
31
Acceleration
value
Get
DINT
Value of the current acceleration according to unit type of
'VELOCITY FORMAT'.
32
Minimum
acceleration
Get/Set
DINT
Value of minimum acceleration limit according to unit type of
'VELOCITY FORMAT'. An 'ACCELERATION VALUE' under this
limit will cause a 'Min. Accel. Underrun' warning and set the
warning flag.
33
Maximum
acceleration
Get/Set
DINT
Value of maximum acceleration limit according to unit type of
'VELOCITY FORMAT'. An 'ACCELERATION VALUE' over this
limit will cause a 'Max. Accel. Exceeded' warning and set the
warning flag.
40
CAM state
register
Get
BYTE
State of all 8 cams. See
, page B-10:
–
Bit 0=Cam_NO_1 State...
–
Bit 7=Cam_NO_8 State
41
CAM polarity
register
Get/Set
BYTE
Polarity for the state of 8 independent CAMs (1-8), See
–
1 cam state will be active outside of the cam limits
–
0 cam state will be active inside of the cam limits
42
CAM enable
register
Get/Set
BYTE
Enable / Disable 8 independent CAMs (1-8). See
, page B-10:
–
1 cam state will be affected by position
–
0 cam state will always be 0
43, 46, 49,
52, 55, 58,
61, 64
CAM X low limit
(0
≤
X
<
8)
Get/Set
UDINT
This is the Switch point for this cam's lower limit. The value must
be less than the 'CAM HYSTERESIS' for this cam and less than
the 'TOTAL MEASURING RANGE'
44,47,50,
53, 56, 59,
62, 65
CAM X high
limit (0
≤
X
<
8)
Get/Set
UDINT
This is the Switch point for this cam's upper limit. The value must
be less than the 'TOTAL MEASURING RANGE'.
45,48,51,
54, 57, 60,
63, 66
CAM X
hysteresis
(0
≤
X
<
8)
Get/Set
UINT
This value will be added to the 'CAM (1) HIGH LIMIT' and
subtracted from the 'CAM (1) LOW LIMIT' when calculating the
cam state. This value must be less than 'CAM (1) LOW LIMIT'.
80
Operating
status
Get
USINT
The 'Direction: CCW' and 'Scaling: On' indicators show enabled
modes for 'CODE SEQUENCE' and 'SCALING CONTROL'.
81
Single-turn
resolution
Get
UDINT
This is the physical number of steps per revolution. This is the
maximum number for 'RESOLUTION PER REVOLUTION'.
82
Number of
distinguishable
revolutions
Get
UINT
This is the number of revolutions the encoder will rotate before the
'POSITION VALUE' rolls over to 0. Must be a multiple of 2
between 2
0
and 2
13
.
Attr. ID
Attribute
Access
Data type
Description
Summary of Contents for Allen-Bradley 842D
Page 10: ...P 6 Using this Manual Notes...
Page 18: ...3 4 Configuring the DeviceNet Encoder DIP Switches Notes...
Page 56: ...I 4 Index Notes...
