User guide

Hardware
890 USE 108 00 August 2001 37
This is the panel.
Slide Switches Two three-position slide switches are located on the front of the CPU. The top switch
is used as follows: for memory protection if in the top position; for no memory
protection in the middle position; and for swapping PCMCIA card (pull-PC 275/285
only) in the bottom position. The three-position slide switch on the bottom is used to
select the communication parameter settings for Modbus (RJ45) port 1. Three
options are available. See MODBUS Port Parameters (3-Position Slide Switch), p. 76.
For RJ45 cable pin-outs, (see RJ45 Port/Cable Pin-Outs, p. 72.)
Rotary Switches Two rotary switches are used for setting Modbus Plus node and Modbus port
addresses. (See 10-Position Rotary Switches -Node Addressing, p. 84.)
Modbus plus
addressing
rotary switches
PCMCI LED
Memory protect/PCICIA slide switch
275/285 only
Memory protect
slide switch 285C/265 only
Communication
parameter
slide switch
PLC interrupt
connection
LEDs
Lithium
battery
E984-265/275/285 PLCs