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

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
103 (67 hex) Get/Set
Cool Retransmit Low Process Variable
INT
104 (68 hex) Get/Set
Heat Retransmit High Process Variable
INT
105 (69 hex) Get/Set
Cool Retransmit High Process Variable
INT
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