Watlow Series D8 - Manual (Page 82)

Chapter 3: Communicating by DeviceNet Series D8 User’s Guide
64 Watlow Anafaze Doc. 0600-3120-2000
Table 3.14 Assembly Class and Services
Table 3.15 Assembly Instance Attributes
1 Array size is equal to the number of loops in the controller (4 in a D84 and 8 in a D88).
2 Array size is equal to the two times the number of loops in the controller (8 in a D84 and 16 in a D88).
3 Array size is equal to the three times the number of loops in the controller (12 in a D84 and 24 in a D88).
Poll Connection
The poll connection allows the master to write all set points
and control modes in one connection. It also allows the read-
ing of all process variables, set points, heat and cool outputs,
and alarm status for all of the loops.
Figure 3.12 to Figure 3.15 illustrate the contents of the polled
I/O messages for the D84 (4-loop) and D88 (8-loop) control-
lers. The Produced Static Input message is produced by the
controller as input to the DeviceNet bus. It is, therefore, output
from the controller. The Consumed Static Output message is
consumed by the controller. It is, therefore, input to the con-
troller.
Class Code 04 hex
Class Services
None
Instance Services
0E hex Get Attribute Single
10 hex Set Attribute Single
Instance Attribute Access Name Type Description
100 (64 hex) 3 (3 hex) Get/Set Set Points array 1 of INTs
Set Point of each
loop
101 (65 hex) 3 (3 hex) Get/Set Modes array 1 of USINTs Mode of each loop
102 (66 hex) 3 (3 hex) Get
Process
Variables
array 1 of INTs
Process Variable of
each loop
103 (67 hex) 3 (3 hex) Get Heat Outputs array 1 of UINTs
Heat Output of each
loop
104 (68 hex) 3 (3 hex) Get Cool Outputs array 1 of UINTs
Cool Output of each
loop
105 (69 hex) 3 (3 hex) Get Alarm Status array 1 of UINTs
Alarm status of
each loop
106
(6A hex)
3 (3 hex) Get/Set Poll Out
array 1 of INTs+
array 1 of USINTs
Consumed Static
Output
107
(6B hex)
3 (3 hex) Get Poll In
BYTE +
array
2 of INTs +
array 3 of UINTs
Consumed Static
Input