Rockwell Automation Publication 2711P-UM006A-EN-P - November 2010 121
Terminal Connections Chapter 7
Serial Connections
The logic module of the terminals has a serial RS-232 port that supports these
connections:
• DH-485 communication through a serial connection
• DF1 full-duplex communication with controllers using direct connections
or modem connections
• Third-party point-to-point communication
• Application uploads and downloads
The serial port is a 9-pin, male, RS-232 connector. Table 49 shows the pinout
descriptions for this port and how these pins map to the serial ports on the
controllers.
The maximum cable length for serial communication is 15.24 m (50 ft).
Figure 11 - RS-232 Serial Port
Serial RS-232 Port
1
5
6
9
Insert plastic tie wrap in the hole
and use as strain relief for all
attached cables.
Table 49 - RS-232 Serial Port Connector Pinout
PanelView Plus RS-232 Port
9-pin DCE
SLC or Logix
9-pin
PLC
25-pin
MicroLogix/
ENI 8-pin DIN
1
2
234
3
327
4
420
5
572
6
66
7
74
8
85
9
Connector Shell Chassis Gnd
WARNING: Do not connect or disconnect the communication cable with
power applied to the terminal, or the serial device on the other end of the
cable. An electrical arc could cause an explosion in hazardous location
installations. Be sure that power is removed or the area is nonhazardous
before proceeding.
RXD
TXD
DTR
COM
DSR
RTS
CTS
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