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Ratio object, Ratio object 73, Table 3.33—ratio class and services 73 – Watlow Series D8 User Manual

Page 91: Table 3.34—ratio class attributes (instance 0) 73

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Series D8 User’s Guide

Chapter 3: Communicating by DeviceNet

Doc. 0600-3120-2000

Watlow Anafaze

73

Table 3.32 PV Retransmit Instance Attributes

(Instances 1 to 4 or 8)

NOTE!

All successful explicit message responses
from a Set service will contain no data. The
response will be a two-byte message con-
taining the requester’s node address and
service code (with R/R bit set).

Ratio Object

The Ratio Object provides read/write access to all ratio pa-

rameters. Instance 0 of this object contains the class attributes

listed in Table 3.34. The four-loop controller has four addi-

tional instances, and the eight-loop controller has eight addi-

tional instances, each containing the attributes listed in

Table 3.35. Instance 1 corresponds to loop 1, instance 2 cor-

responds to loop 2, and so on.

Table 3.33 Ratio Class and Services

Table 3.34 Ratio Class Attributes (Instance 0)

Attribute

Access

Name

Type

Description

100 (64 hex) Get/Set

Heat Output Retransmit

USINT See page 148.

101 (65 hex) Get/Set

Cool Output Retransmit

USINT See page 148.

102 (66 hex) Get/Set

Heat Retransmit Low Process Variable

INT

See page 148.

103 (67 hex) Get/Set

Cool Retransmit Low Process Variable

INT

See page 148.

104 (68 hex) Get/Set

Heat Retransmit High Process Variable

INT

See page 148.

105 (69 hex) Get/Set

Cool Retransmit High Process Variable

INT

See page 148.

Class Code

69 hex

Class Services

0E hex Get Attribute Single

Instance Services

0E hex Get Attribute Single
10 hex Set Attribute Single

Attribute

Access

Name

Type

Description

1 (1 hex)

Get

Revision

UINT

Revision of this object

2 (2 hex)

Get

Max

Instance

UINT

Maximum instances of this object (8)

3 (3 hex)

Get

Number of

Instances

UINT

Number of object instances