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Establishing Communication - RS232

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The equipment must be at a certain distance from the computer according to the table below.

 

Baud Rate

(bps)

Maximum Cable Size

(ft)

Maximum Cable Size

(m)

9600

32.81

10

19200

24.93

7.6

38400

12.14

3.7

 

 

CFW300

 

 

1) Connection of the Computer to the Equipment

 

The figure below shows how to connect a computer to the equipment via RS232.

 

cfw300-crs232-connected_to_computer

 

 

2) Computer - Plug-In Module Connection

 

The figure below shows details of the connection.

 

cfw300-crs232_detailed_connection

 

 

3) Windows Device Manager

 

The Windows device manager indicates the serial port connected to the equipment.

The computer name on the device manager is illegible on purpose.

 

cfw300-device_manager-rs232

 

 

4) Communication Configuration on the WPS

 

On the WPS, select the serial port correctly in the window Property > Communication Configuration as follows.

 

cfw300-properties-communication_configuration-rs232

 

 

wpshelp_common_fig_note

NOTE!

Turn off the device before connecting accessories or before connecting wires, then re-power the device before testing communication.

 

 

5) Connecting the Equipment

 

1.Make the connections of the serial DB9 female connector of the RS232 cable to the CFW300-RS232 accessory as shown in the previous figures;
2.Insert the DB9 female connector of the RS232 cable into the DB9 male connector of the computer;
3.In the device manager, check which serial port is connected;
4.Make sure that the serial connection is selected in the Communication Configuration category of the resource Property window;
5.The serial port and its configuration of the resource in the WPS must be the same serial port that appears in the Windows device manager where the RS232 cable is connected;
6.Never change the values in parameters P308, P310, P311 and P312 during a connection. Changing those parameters causes the immediate loss of communication between the PC and the equipment.