NET Concentrator System
®
NCS
- 72 -
Moore Industries-International, Inc.
www.miinet.com
Configuring the AOM
The AOM can be configured using the web server
contained within the Interface Module to which it is
attached. It can also be configured using the NCS PC
Configuration Software. For further details please see
the
Navigating the PC Program
in the
Configuration
Section
of this manual. To configure the AOM,
you must first mount it to the Interface Module as
described in
Installing the I/O Modules
To access real-time data using MODBUS commands
instead of the web server, see
the MODBUS/TCP
Support
section in the MODBUS chapter of this
manual.
Note:
The AOM I/O module is set to factory defaults,
to use either method mentioned above to
configure with your desired parameters.
After mounting, bring up the NCS configuration
software by starting an Internet browser on a
computer attached to the same network as the NCS,
and typing
http://
followed by the IP address that the
Moore Industries NAC Client software lists for your
Interface Module.
Once you have accessed the NCS configuration
software, click on
I/O Module
, then
Configure Analog
Output Module.
Configure the parameters listed on
the screen, and when you are finished, press
Commit
.
The following sections describe parameters of the
configuration when using web page configuration
method. The same parameters can be found within
the NCS PC Configuration Software
Current Channel-
The AOM comes standard with four
channels, each independently configurable to handle
current or voltage. Select the channel you wish to
program
Custom Tag-
Assign tag names, or descriptors,
to process variables. The
Process Status
page
will display the data next to the respective process
variable tag. These tags can also be read by the OPC
Server and can therefore be used to access process
data in the NCS when configuring an OPC client.
Channel Disabled-
Checking this box will cause the
AOM and its associated Interface Module to ignore the
selected channel, allowing you to use less than all four
channels without receiving error messages.
Output Type-
This programs the AOM to output either
volt or mA. When an
Output Type
is selected, other
parameters may become red, indicating that these
parameters must be programmed.
Output Ranging-
Allows you to input the upper and
lower ranges that you want the AOM to output.
Output Damping-
The Output Damping allows you
to introduce a delay into the AOM’s response to a
change in input. The value of the output damping is
the number of seconds that it will take for a display
to make a 63% change in response to the change in
input. A damping time of “0” will disable damping.
Output on Out-of-Range PV-
These boxes allow you
to enter the value that you want the AOM’s output to
default to when the monitored input goes out of range.
Loop Test-
This function allows you test the other
instruments on the loop by setting the AOM to output
a specific value. After clicking
Loop Test
, use the
arrows to select the desired value and press
Set Value
to begin.
Saving Configuration Settings-
If you will be using
a common configuration within your system, you can
create a configuration and save it to a file so that
you can load it into another I/O module. Refer to the
Saving Configuration Settings
section of this manual
for more information.
Output on Failure-
This section tells the AOM what
to do if the Interface Module stops scanning data into
it. It will either maintain the last value (
Hold Last
), or
jump to a predefined value that you specify (
Preset
Predefined Value
).
Output Scaling-
Output Scaling allows you to access
the analog output process variable in a number range
more meaningful to you than the actual mA or Volts
output. For example, if the actual output range is
4-20mA, set the scaled range to 0-100; you now write
0 to the process variable to get 4mA out and 100 to
get 20mA out.
