Rockwell Automation 1785-Lx0E,D178510.5 QUICK START ETHERNET PLC-9 User Manual
Page 9
 
Publication 1785-10.5 - November 1998
Overview
1-3
PLC-5/20E Processor Front Panel
PLC-5/40E
Programmable
Controller
Use this port with ASCII or DF1 full-duplex, half-duplex 
master, and half-duplex slave protocols. The port’s 
default configuration supports processor programming:
channel 0-25-pin D-shell serial port; supports standard 
EIA RS-232C and RS-423 and is RS-422A compatible
 one stop-bit
 BCC error check
 no handshaking
 DF1 point-to-point 
 2400 bps
 no parity
battery indicator (red when the battery is low)
processor RUN/FAULT indicator (green when 
running; red when faulted)
force indicator (amber when I/O forces 
are enabled)
channel 0 communication status indicator 
(green when the channel is communicating)
Install memory module here
Use these labels to write information about the 
channel: communication mode, station addresses etc.
Install battery here
channel 1B status indicator (lights green and red)
PLC-5 family member designation
keyswitch; selects processor mode
channel 1A communication port; its default 
configuration is DH+ communication
8-pin mini-DIN, DH+ programming terminal 
connection parallel to channel 1A
channel 2 Ethernet status indicator (green when 
functioning normally; red when not functioning)
channel 2 communication port;
a 15-pin Ethernet port
channel 1A status indicator
(lights green and red)
channel 2, Ethernet transmit indicator (green when 
the channel is communicating)
channel 1B communication port; its default 
configuration is remote I/O scanner
Wrist strap
!
ATTENTION: Make sure you understand the anti-static environment.
The processor is shipped in a static-shielded container to guard against 
electrostatic damage. Electrostatic discharge can damage integrated 
circuits or semiconductors in the processor module if you touch 
backplane connector pins. It can also damage the module when you set 
configuration plugs or switches inside the module. Avoid electrostatic 
damage by observing the following precautions.
• Remain in contact with an approved ground point while handling the 
module (by wearing a properly grounded wrist strap).
• Do not touch the backplane connector or connector pins.
• When not in use, keep the module in its static-shielded container.