Internal Modem Connections ION 8000 Series User Guide
Page 92 Chapter 6 - Communications
2. Use the front panel or ION software to set up the internal modem and the serial
communications port (COM1 or COM4) that is the ModemGate. The default for
these ports is:
NOTE
You can enable ModemGate on either COM1 or COM4, not both simultaneously.
3. Set the internal modem COM2 baud rate, Unit ID and protocol. The baud rate
must be the same as the port hosting the gateway and all the devices connected
to the gateway.
4. Set the protocol of the port hosting the gateway to MODEMGATE (either COM1
or COM4). You must also set the baud rate to the same as the modem baud rate
(COM2).
Configuring devices connected to the ModemGate meter
1. Use ION software or the front panel to change and configure settings. Ensure
each device connected to the meter has the same baud rate as the meter
ModemGate port (either COM1 or COM4).
2. Ensure each device connected on the RS-485 network (including the meter
modem) has a unique Unit ID number. Make a record of your changes.
NOTE
In order to configure the dial-in connection the system administrator requires the serial baud rate of the
modem site and a record of the Unit ID numbers for every device.
3. Ensure ‘RS-485’ is selected for connections to multiple devices along the same
bus.
Adding ModemGate meters to the network
1. Once you have created a Modem Site using the Management Console, add the
meter and all devices connected to the ModemGate port.
2. Ensure each meter on the modem Site has a unique Unit ID number (the
technician who installed the meter at the remote site should provide you with
this information).
Communications modules Setting Default
COM1
(Standard RS-232/485 port)
Comm Mode RS-485
Baud Rate 9600
Unit ID 100
Protocol ION
COM2 (Modem Port)
Baud Rate 9600
Unit ID 101
Protocol ION
Modem Init Strings AT&F
COM4
(Optional dedicated RS-485 port)
Baud Rate 9600
Unit ID 103
Protocol ION
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