Elmo Computer Hardware 1.1 Benutzerhandbuch

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

 

  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. 

 Ensure that the shield of the cable is connected to the shield of the connector used for 

RS-232 communications. The drain wire can be used to facilitate the connection. 

J1/1 RS232_Rx 

RS-232 

receive 

J1/2 RS232_Tx 

RS-232 

transmit 

J1/3 RS232_COMRET Communication 

return 

 

Guitar Installation Guide 

Installation 

MAN-GUIIG (Ver. 1.1) 

 

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