Specifications

Rev. 1.43

User's Guide

3.6. Jumpers: J4, J5, J6, J7

This are the 'serial mode' jumpers, they have six position.

They permits to select the mode used for the corresponding serial port.

All the six positions of these jumpers must be either all in RS-232 position, either all in RS-485

position.

They are located near its corresponding serial ports:

Figure 10: Communication ports jumpers in RS-232 mode

J4 correspond to serial port SCC1, J5 correspond to serial port SCC2

J6 correspond to serial port SCC3, J7 correspond to serial port SCC4

For RS-232 protocols, set all six jumpers in RS-232 position: 1-2, 4-5, 7-8, 10-11, 13-14, 16-17

For RS-422, RS485 or V.35, set all six jumpers in RS-485 position: 2-3, 5-6, 8-9, 11-12, 14-15, 17-18

Example for ports 1 & 2 in RS-485 mode and ports 3 & 4 in RS-232 mode:

Figure 11: Communication ports jumpers example

Warning

ALL six jumpers must always be in the same position, other configuration can

damage the board.

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