Serial Communication Connector Cn3; Cn3 Terminal Layout And Identification; Cn3 Terminal Signal Identification - Delta ASD-B2-0121-B User Manual

Chapter 3 Connections and Wiring

3.5 Serial Communication Connector CN3

3.5.1 CN3 Terminal Layout and Identification

The servo drive can be connected to a PC or controller via a serial communication
connector. Users can operate the servo drive through PC software supplied by Delta
(contact to the dealer). The communication connector/port of Delta servo drive can
provide three common serial communication interfaces: RS-232, RS-485, and RS-422
connection. RS-232 is mostly be used but is somewhat limited. The maximum cable
length for an RS-232 connection is 15 meters (50 feet). Using RS-485 or RS-422 interface
can allow longer distance for transmission and support multiple drives to be connected
simultaneously.
PIN No. Signal Name
1 Grounding
RS-232 data
2
transmission
3
4 RS-232 data receiving
RS-485 data
5
transmission
RS-485 data
6
transmission
NOTE
1) For the connection of RS-485, please refer to page 8.3.
2) There are two kinds of IEEE1394 communication cables available on the market. If the user
uses one kind of cable, which its GND terminal (Pin 1) and its shielding is short-circuited,
the communication may be damaged. Never connect the case of the terminal to the ground
of this kind of communication cable.
3-34
CN3 Drive Connector

CN3 Terminal Signal Identification

Terminal
Identification
GND
RS-232-TX
-
RS-232_RX
RS-485(+)
RS-485(-)
Ground
For data transmission of the servo drive.
Connected to the RS-232 interface of PC.
- Reserved
For data receiving of the servo drive.
Connected to the RS-232 interface of PC.
For data transmission of the servo drive
(differential line driver + end)
For data transmission of the servo drive
(differential line driver - end)
Description
Revision June 2010