Modicon 584 PLCs - Communication Settings
- Last UpdatedDec 06, 2021
- 2 minute read
To establish communication with a device, configure the Boards, Port and I/O Device in Plant SCADA Studio's Topology activity. If you use the Express Communications Wizard to connect to a device, these settings will be automatically configured for you. However, if you need to manually configure these, use the settings outlined below.
Board Settings
Typically, you would use a serial board or COM port for this communication. Refer to the instructions for setting up and using COM ports or serial boards. Or complete the Board settings with the following specific information.
|
Field |
Value |
|---|---|
|
Board Type |
If using a serial board or COM port, enter COMx. |
|
Address |
If using a serial board or COM port, enter 0. |
|
I/O Port |
Leave this field blank. |
|
Interrupt |
Leave this field blank. |
|
Special Options |
Leave this field blank. |
Port Settings
Complete the Port settings with the following specific information.
|
Field |
Value |
|---|---|
|
Port Number |
This value matches the COM port number. This number is defined in the Ports section of the Control Panel. |
|
Baud Rate |
This value matches the setting of the unit - 19200. |
|
Data Bits |
Enter 8. |
|
Stop Bits |
Enter 1. |
|
Parity |
This value matches the setting of the unit - EVEN_P. |
|
Special Options |
You may want to use the special options for the COMx Driver if you are using a modem (or similar) and want the driver to perform differently. For more information, see the topic COMx Driver Special Options Reference in the Communicating with I/O Devices chapter of the main help. |
I/O Device Settings
Complete the I/O Device settings with the following specific information.
|
Field |
Value |
|---|---|
|
I/O Device Address |
The PLC station number configured on the PLC. Try 1 to 10. 1 specifies station number 1. 9 specifies station number 9. |
|
I/O Device Protocol |
Enter MODBUS if you want to use the Modbus RTU (binary) protocol. Enter MODBUSA if you want to use the Modbus ASCII protocol. (See the topic Protocol Variants to determine if a non-standard protocol variant is required.) |