Instance attributes, Cip parameter object – Rockwell Automation 1769-SM2 Compact I/O DSI/Modbus Communication Module User Manual

Page 175

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CIP/DSI Objects

C-5

Instance Attributes

CIP Parameter Object

(Continued)

Attribute
ID

Access
Rule

Name

Data Type Description

1

(1)

(1)

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

Parameter Value

(2)

(2)

Specified in descriptor, data type, and data size.

(3)

(3)

Value varies based on parameter instance.

2

Get

Link Path Size

USINT

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

3

Get

Link Path

(4)

(4)

Refer to the CIP Common specification for a description of the link path.

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

USINT

0xC2 = SINT (8-bits)
0xC3 = INT (16-bits)
0xC4 = DINT (32-bits)
0xC6 = USINT (8-bits)
0xC7 = UINT (16-bits)
0xCA = REAL (32-bits)
0xD2 = WORD (16-bits)

6

Get

Data Size

USINT

(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

(1)

(3)

11

Get

Maximum Value

(1)

(3)

12

Get

Default Value

(1)

(3)

13

Get

Scaling Multiplier

UINT

(3)

14

Get

Scaling Divisor

UINT

(3)

15

Get

Scaling Base

UINT

(3)

16

Get

Scaling Offset

UINT

(3)

17

Get

Multiplier Link

UINT

(3)

18

Get

Divisor Link

UINT

(3)

19

Get

Base Link

UINT

(3)

20

Get

Offset Link

UINT

(3)

21

Get

Decimal Precision USINT

(3)

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