Elmo 1.1 Benutzerhandbuch
3.12 Communications
The communication interface may differ according to the user’s hardware. The Guitar can
communicate using the following options:
communicate using the following options:
a. RS-232, full duplex
b. CANopen
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.
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.
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.
simultaneously.
3.12.1 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.
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
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.
Pin Signal
Function
Pin
Location
J1/1 RS232_Rx
RS-232
receive
J1/2 RS232_Tx
RS-232
transmit
J1/3 RS232_COMRET Communication
return
Table 3-10: RS-232 Pin Assignments
Guitar Installation Guide
Installation
MAN-GUIIG (Ver. 1.1)
3-35