ElmoMC SimplIQ Digital Servo Drives-Trombone DC - Manual (Page 62)

DC Trombone Installation Guide Installation
MAN-DCTROIG (Ver. 1.601)
www.elmomc.com
62
3.9. Communication Cables
The communication cables use an 8-pin RJ-45 plug that connect to the RS-232 and CAN ports of
the DC Trombone.
The communication interface may differ according to the user’s hardware. The DC Trombone
can communicate using the following options:
a. RS-232, full duplex
b. CAN
RS-232 communication requires a standard, commercial 3-core null-modem cable connected
from the DC Trombone to a serial interface on the PC. The interface is selected and set up in
the Composer software.
In order to benefit from CAN communication, the user must have an understanding of the basic
programming and timing issues of a CAN network.
The CAN interface is not isolated.
For ease of setup and diagnostics of CAN communication, RS-232 and CAN can be used
simultaneously.
3.9.1.1. RS-232 Communication
Notes for connecting the RS-232 communication cable:
• Use a 26 or 28 AWG twisted pair shielded cable. The shield should have aluminum foil
covered by copper braid with a drain wire.
• 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 male RJ plug must have a shield cover.
• Ensure that the shield of the cable is connected to the shield of the RJ plug. The drain wire
can be used to facilitate the connection.
Pin Signal Function Pin Location
1, 2 N/A —
3 RS232_Tx RS-232 transmit
4 N/A —
5 COMRET Communication return
6 RS232_Rx RS-232 receive
7, 8 N/A —
Table 13: RS-232 Cable - Pin Assignments