User Manual

Solo Whistle Installation Guide Installation

MAN-SOLWHIIG (Ver. 1.503)

www.elmomc.com

3.9. Communications

The communication interface may differ according to the user’s hardware. The Solo Whistle

can communicate using the following options:

a. RS-232, full duplex

b. CANopen

RS-232 communication requires a standard, commercial 3-core null-modem cable connected

from the Solo Whistle to a serial interface on the PC. The interface is selected and set up in the

Composer software.

In order to benefit from CANopen communication, the user must have an understanding of the

basic programming and timing issues of a CANopen network.

For ease of setup and diagnostics of CAN communication, RS-232 and CANopen can be used

simultaneously.

3.9.1. RS-232 Communication

Notes for connecting the RS-232 communication cable:

• Connect the shield to the ground of the host (PC). Usually, this connection is soldered

internally inside the connector at the PC end. You can use the drain wire to facilitate

connection.

• The RS-232 communication port is non-isolated.

Pin (J5) Signal Function

1 RS232_Rx RS-232 receive

2 RS232_Tx RS-232 transmit

3 RS232_COMRET Communication return

Pin Positions

Table 6: RS-232 Pin Assignments