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Related Topics
Creating an Ethernet gateway site using ION Setup
Configuring EtherGate using the display
Use the meter’s display to configure a serial port to use the EtherGate protocol.
1. Press the
Home
button.
2. Navigate to
Setup Menu > Communications Setup
.
3. Press
Select
.
4. Scroll then select
COM1 Setup
or
COM4 Setup
.
5. Highlight the parameter and press
Edit
. Enter the meter password if
prompted, change the setting, then press
Select
to save the changes.
Parameter
Setting
Protocol
EtherGate
Baud Rate
Serial Port
Serial port settings must match the settings for all connected
serial devices
You can use ION Setup to create an Ethernet gateway site and access the serial
network of devices connected through the EtherGate meter.
Related Topics
Creating an Ethernet gateway site using ION Setup
Modbus Ethernet gateway
A Modbus Ethernet gateway allows multiple Modbus masters on the LAN / WAN
to connect to downstream serial Modbus slave devices.
A Modbus master device, such as an energy management system, can
communicate through the gateway meter to a serial network of devices connected
to the gateway meter’s serial port(s). The meter receives Modbus TCP/IP data on
TCP port 502, translates it to Modbus RTU then forwards it to the addressed slave
device.
This functionality allows the use of monitoring software to access information from
slave devices for data collection, trending, alarm/event management, analysis,
and other functions.
Modbus Ethernet gateway implementation
There are some specific aspects to your meter’s Modbus Ethernet gateway
implementation.
A Modbus request is sent through Ethernet using Modbus/TCP to the gateway
meter. If this request is addressed with the slave ID of one of the downstream
serial devices, the meter forwards the message to that device using Modbus RTU.
When the downstream device responds, the gateway meter forwards the
response back to the Modbus master. In addition to Modbus slave addresses 1 -
247, the Modbus gateway supports slave address 255, which sends a Modbus
request to the gateway meter only.
For Modbus gateway, you must install the serial Modbus slave devices, configure
them and connect them to your Ethernet-connected Modbus gateway meter.
Ensure that each serial device is configured to communicate over Modbus with the
same baud rate and has a unique unit ID. Configure the gateway meter’s serial
port to use the Modbus master protocol and enable the Modbus gateway feature,
create a Modbus gateway site in ION Setup or an energy management system,
and add the serial devices to the Modbus gateway site.
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