HEC-P6XXX User’s Manual
Document #: 2016002.1.pdf
PAGE 33 of 60
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HEC-P6XXX Features
With the wiring and configuration complete, to use one or more serial ports, they must be installed in the EZ LADDER diagram proj
-
ect and configured.
In EZ LADDER, from the File Menu at the top, click
PROJECT
then
SETTINGS
. This will open the Project Settings Window. The HEC-
P6000 was previously selected.
Click the
PROPERTIES
button. The HEC-P6000 Properties Window will open. Under the Devices, Bus section, if any UART ports are
installed, they would be listed. Click the
ADD DEVICE
button. This will open the PLCHIP-PXX Devices window. Select either UART2
or UART3 from the Devices pane. See Figure 2.23. When the required UART port has been selected, click
OK.
The UART Properties
Window will open.
Configure the Serial Port (UART) as required for your application. See Figure 2.24.
The RTS GPIO Pin is only used for RS485. If using RS485, click the drop down and select the only pin listed. This is used for RS485
transmit control.
The Enable ST Buffers check box identifies to enable the structured text UART buffers. This should only be used when using struc
-
tured text for communications. When enabled, the buffer size must be completed.
When complete, click
OK
the number of times required to close the windows and return to the EDIT workspace. The serial port is
now ready to be used. Remember to Save your ladder diagram using the menu
FILE
and
SAVE
or
SAVE AS.
Figure 2.23- Add UART (Serial Port) Device
Figure 2.24- UART (Serial Port) Properties
To use Modbus with the Serial Port (UART) as either master or slave, the Modbus feature must be installed similarly as the
actual UART was just installed. As modbus is a software protocol, it is not covered in detail in this hardware manual. For
details on using Modbus networking, refer to the P-Series EZ LADDER Toolkit Manual.
Additional serial functionality is available when using Structured Text. For details on using Structured Text, refer to the P-Series EZ
LADDER Toolkit Manual.