Reading parameter values – Rockwell Automation 20-COMM-H RS485 HVAC Adapter FRN 2.xxx User Manual
Page 54
5-8
Using Metasys N2
20-COMM-H RS-485 HVAC Adapter User Manual
Publication 20COMM-UM009D-EN-P
Using Metasys Configurable
Objects to Access Parameters
Configurable objects are inputs and outputs that let you read and write
parameter values. These objects handle only 16-bit parameter values.
Reading Parameter Values
The configurable points may show any 16-bit parameter in the drive by
configuring the Param# point. The Param# for INx points are stored in the
RAM in the adapter and need to be written to only one time per power cycle.
The adapter reads the value of the drive parameter configured in the Param#
point and shows the result in the User INx point. The adapter reads the
parameter values from the drive continuously one at a time when Param# is
set to a non-zero value. See
Figure 5.1
and
Table 5.P
.
Figure 5.1
Configurable Input Point Operation Objects Inputs
Table 5.O Logic Status and Feedback: Analog Inputs
Network Point
Type (NPT)
Network Point
Address (NPA)
Parameter
Description
Range
AI
1
Product Status
Word
16-bit word. Bit definitions for PowerFlex 70/700
drives are in
Table 5.N
. For other products, refer
to their documentation.
AI
2
Feedback Lo
-100.0…100.0%
Table 5.P Configurable Objects: Inputs
Network Point
Type (NPT)
Network Point
Address (NPA) Name
Description
Default
AI
3
User IN1
User-defined Input 1
0
AI
4
User IN2
User-defined Input 2
0
AI
5
User IN3
User-defined Input 3
0
AI
6
User IN4
User-defined Input 4
0
ADI
1
Param # for IN1 0 (not in use), 1 to maximum # of drive
parameters
0
ADI
2
Param # for IN2 0 (not in use), 1 to maximum # of drive
parameters
0
ADI
3
Param # for IN3 0 (not in use), 1 to maximum # of drive
parameters
0
ADI
4
Param # for IN4 0 (not in use), 1 to maximum # of drive
parameters
0
ADI
AI
Controller
Drive
Param#
for INx
User
INx
Request
Response Data