Rockwell Automation 1785-l11B, -L20B, -L30B, -L40B, -L40L, -L60B, -L60L, -L80B Enhanced PLC-5 Programmable Controllers Installation Instructions - Manual (Page 7)

Publication 1785-IN062A-EN-P - May 2005
Enhanced PLC-5 Programmable Controllers 7
PLC-5/30 Controller Front Panel
Use this port with ASCII or DF1 full-duplex, half-duplex
master, and half-duplex slave protocols. The port's
default configuration supports controller programming:
one stop-bit
BCC error check
no handshaking DF1 point-to-point
2400 bps
no parity
battery indicator (lights 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)
channel 1B status indicator (lights green and red)
PLC-5 family member designation
channel 0-25-pin D-shell serial port; supports standard
EIA RS-232C and RS-423 and is RS-422A compatible
Install memory module here
Use these labels to write information about the
channel: communication mode, station addresses, etc.
keyswitch; selects controller mode
channel 1A communication port;
its default configuration is DH+
channel 1B communication port;
its default configuration is remote I/O scanner
Install battery here
8-pin mini-DIN, DH+ programming terminal
connection parallel to channel 1A
channel 1A status indicator
(lights green and red)