User manual

MPLAB PM3 – MPLAB IDE Reference

7.5.4 Communications Tab

To set the port for communications between the programmer and the PC, select

Programmer>Settings

and click on the Communications tab. Communications

between the programmer and the PC may be either over a serial connection or a USB

connection.

The Windows COM port setup requires special attention. The proper drivers must be

installed and the port may need to be set up manually. For additional information on the

communication port setup, refer to Section 2.3.1 “Installing the Communications

Cable”, Section 2.5 “Configuring MPLAB IDE for Use with MPLAB PM3” and

B.5.1 “Failure to Establish Communication with Programmer”.

7.5.4.1 SERIAL COMMUNICATION

To use RS-232 (serial) communications between the PC and the MPLAB PM3 device

programmer, select the

PC COM port for use: COM1, COM2, COM3 or COM4 (Figure 7-6).

COM1 is the default. Click OK.

FIGURE 7-6: SERIAL COM PORT

To make sure the port is set up properly, follow the instructions in the “For RS-232

Communications” subsection in Section 2.3.1 “Installing the Communications

Cable”.

Note: Do not physically connect both.