Instance attributes – Rockwell Automation 20-COMM-Q ControlNet Adapter User Manual

Page 216

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C-6

ControlNet Objects

20-COMM-C/Q ControlNet Adapter User Manual
Publication 20COMM-UM003F-EN-P

Instance Attributes

Attribute ID Access Rule Name

Data Type

Description

1

(1)

Parameter Value

(2)

(3)

2

Get

Link Path Size

BYTE

0 = No link specified
n = The size of Attribute 3 in bytes

3

Get

Link Path

(4)

4

Get

Descriptor

WORD

0 = False, 1 = True
Bit 1 = Supports ENUMs
Bit 2 = Supports scaling
Bit 3 = Supports scaling links
Bit 4 = Read only
Bit 5 = Monitor
Bit 6 = Extended precision scaling

5

Get

Data Type

BYTE

1 = WORD (16-bit)
2 = UINT (16-bit)
3 = INT (16-bit)
5 = SINT
6 = DINT
8 = USINT
9 = UDINT
11 = REAL
23 = SHORT_STRING
24 = BYTE
25 = DWORD

6

Get

Data Size

BYTE

(3)

7

Get

Parameter Name String

SHORT_STRING

(3)

8

Get

Units String

SHORT_STRING

(3)

9

Get

Help String

SHORT_STRING

Null string

10

Get

Minimum Value

(2)

(3)

11

Get

Maximum Value

(2)

(3)

12

Get

Default Value

(2)

(3)

13

Get

Scaling Multiplier

WORD

(3)

14

Get

Scaling Divisor

WORD

(3)

15

Get

Scaling Base

WORD

(3)

16

Get

Scaling Offset

WORD

(3)

17

Get

Multiplier Link

WORD

(3)

18

Get

Divisor Link

WORD

(3)

19

Get

Base Link

WORD

(3)

20

Get

Offset Link

WORD

(3)

21

Get

Decimal Precision

BYTE

(3)

(1)

Access rule is defined in Bit 4 of instance attribute 4 (0 = Get/Set, 1 = Get).

(2)

Specified in descriptor, data type, and data size.

(3)

Value varies based on parameter instance.

(4)

See the ControlNet specification for a description of the link path.

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