Moore Industries NET Concentrator System AOM, Руководство пользователя

Страница: 41 / 103

NET Concentrator System
®
NCS
- 41 -
Moore Industries-International, Inc. www.miinet.com
Peer-to-Peer Software
Configuration
To configure a Peer-to-Peer network, you may use the
NCS Configuration Software Program (NCS Config), or
the MODBUS configuration web page.
The Interface Module has two MODBUS ports that
are independently configurable. For each MODBUS
port, there are four required software configuration
parameters for Peer-to-Peer configuration.
Note:
For Peer-to-Peer mode each EMM in the system can
be connected to a maximum of 6 I/O modules.
Mode -
The mode setting determines whether the
MODBUS port is in Slave, Master or Peer-to-Peer
mode. Each port may be individually configured
for any of the modes of operation. You must set
the Mode to the same value in all Interface Module
stations of the Peer-to-Peer System.
MODBUS Address-
The address can be set
independently for each port. The allowed range
for a MODBUS slave is 1 to 247. However, the
allowed range in Peer-to-Peer mode is 1-32.
The user is responsible for assigning each
Interface Module station in a given network with
a unique MODBUS Address. If both ports of the
Interface Module are being used on the same bus,
the ports must have unique addresses.
Consumer-
This setting enables Consumer Mode
on the associated port. When checked, the
station will consume data from the station
matching the Producer Address setting (below.)
Producer Address-
For all consumer station
ports, a Producer’s MODBUS Address must be
assigned. The address range is 1-32, excluding
the MODBUS Address of the station being
configured. When the consumer feature
is disabled, no Producer’s MODBUS Address is
assigned and the station’s output channels will
have no input (from another station) mapped to
them via that port.
Note:
For further clarification of terms or parameters
in the NCS Configuration Software Program,
right-click the related portion of the screen and
select the “What’s This?” button.
Software Configuration Instructions
1. Enable Peer-to-Peer. To enable the
Peer-to-Peer feature in the MODBUS configuration
window, select Peer-to-Peer as the mode
for either MODBUS 1, MODBUS 2, or both ports
for redundant Peer-to-Peer.
2. Set the MODBUS address. Legal values are
from 1-32.
3. Ensure that all Interface Module baud rates,
parities, character timeouts and response delays
match one another.
4. Once you enable Peer-to-Peer, the “Consumer”
box becomes available. If your station is to also
be configured as a consumer, check this box.
5. When enabling your Interface Module as a
consumer, you must enter an address value in the
“Producer’s MODBUS Address” text box.
This number may be any value between 1 and 32,
with the exception of the value entered into the
“MODBUS Address” box in the configuration
window.
6. Configure Output Scaling. For analog channels,
the Input and output ranges must match. If the
input and output types do not match (i.e. a
temperature input being transferred to a milliamp
output,) then scaling should be enabled in the
output channel. Then when viewing process data,
or associated MODBUS registers on the consumer
station, the floating point value will be in input
units.
Repeat the previous steps for all Interface Modules in
your system that are to be configured as Peer-to-Peer.