Digi Connect EZ 4 User Manual page 202

Serial port
3. Click the name of the port that you want to configure.
The serial port is enabled by default. To disable, toggle off Enable.
4. For Mode, select Modbus.
5. Enable Altpin to use the Altpin feature. Altpin is disabled by default.
This feature should be enabled when you are using a modem and an 8-pin cable and you need
CD (Carrier Detect). When enabled, the DTR on pin 1 drives DCD.
If altpin is disabled, the hardware signal on RJ45 pin 1 becomes DSR instead of DCD. This
alternative can be used if DCD is not required, and DSR is needed instead.
6. (Optional) For Label, enter a label that will be used when referring to this port.
7. For Signalling, select the electrical signaling interface type used on this serial port:
RS-232
n
Enable RTS Toggle if you want to enable RTS toggling during transmission on this
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serial port. If enabled, this setting overrides RTS\CTS flow control.
For RTS Pre-delay, enter the amount of time RTS is asserted before starting data
l
transmission. The time is measured in milliseconds. The default is 0ms.
For RTS Post-delay, enter the amount of time RTS is deasserted before completing
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data transmission. The time is measured in milliseconds. The default is 0ms.
RS-422
n
Enable Termination if you want to enable electrical termination on this serial port.
l
RS-485
n
Enable Termination if you want to enable electrical termination on this serial port.
l
Enable Full Duplex if you want to enable full duplex communication on this serial
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port.
The default is RS-232.
8. 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.
a. Baud rate: For Baud rate, select the baud rate used by the device to which you want to
connect. The default is 9600.
b. 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.
c. Parity: For Parity, select the type of parity used by the device to which you want to
connect. The default is None.
d. 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.
Digi Connect EZ 4/4i User Guide
Configure Modbus mode
202