Configure Modbus mode for a serial port

Modbus mode allows you to use the serial port for Modbus. See Modbus gateway.

To change the configuration to match the serial configuration of the device to which you want to connect:

 Web

Log into the IX30 WebUI as a user with full Admin access rights.
On the menu, click System. Under Configuration, click Serial Configuration.
The Serial Configuration page is displayed.
Note You can also configure the serial port by using Device Configuration > Serial. Changes made by using either Device Configuration or Serial Configuration will be reflected in both.
Click the name of the port that you want to configure.

The serial port is enabled by default. To disable, toggle off Enable.

For Mode, select Modbus.
(Optional) For Label, enter a label that will be used when referring to this port.
For Signalling, select the electrical signaling interface type used on this serial port:
- RS-232
- RS-422
  - Enable Termination if you want to enable electrical termination on this serial port.
- RS-485
  - Enable Termination if you want to enable electrical termination on this serial port.
The default is RS-232.
Expand Serial Settings.

The entries in the following fields must match the information for the power controller. Refer to your power controller manual for the correct entries.
1. Baud rate: For Baud rate, select the baud rate used by the device to which you want to connect. The default is 9600.
2. Data bits: For Data bits, select the number of data bits used by the device to which you want to connect. The default is 8.
3. Parity: For Parity, select the type of parity used by the device to which you want to connect. The default is None.
4. Stop bits: For Stop bits, select the number of stop bits used by the device to which you want to connect. The default is 1.
5. Flow control: For Flow control, select the type of flow control used by the device to which you want to connect. The default is None.
Click Apply to save the configuration and apply the change.

 Command line

Select the device in Remote Manager and click Actions > Open Console, or log into the IX30 local command line as a user with full Admin access rights.
Depending on your device configuration, you may be presented with an Access selection menu. Type admin to access the Admin CLI.
At the command line, type config to enter configuration mode:
```
> config
(config)>
```
The serial port is enabled by default. To disable:
```
(config)> serial port1 enable false
(config)>
```

Set the mode:

(config)> serial port1 mode modbus
(config)>

Set the signaling interface type used on this serial port:
- rs -232
- rs -422
  - Enable Termination if you want to enable electrical termination on this serial port.
- rs -485
  - Enable termination if you want to enable electrical termination on this serial port:
```
(config)> serial port1 termination true
(config)>
```
The default is rs-232.
(Optional) Set a label that will be used when referring to this port.
```
(config)>path-paramlabel label
(config)>
```
Set the baud rate used by the device to which you want to connect:
```
(config)> serial port1 baudrate rate
(config)>
```
Set the number of data bits used by the device to which you want to connect:
```
(config)> serial port1 databits bits
(config)>
```
Set the type of parity used by the device to which you want to connect:
```
(config)> serial port1 parity parity
(config)>
```
Allowed values are:
- even
- odd
- none
The default is none.
Set the stop bits used by the device to which you want to connect:
```
(config)> serial port1 stopbits bits
(config)>
```
Set the type of flow control used by the device to which you want to connect:
```
(config)> serial port1 flow value
(config)>
```
where value is one of:
- none
- rts/cts
- xon/xoff
Save the configuration and apply the change
```
(config)> save
Configuration saved.
>
```
Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection menu. Type quit to disconnect from the device.