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The PLC base unit provides a means of housing and connecting the installed I/O. Modular base units have slots for interchangeable I/O connections to the backplane's data bus. DirectLOGIC 205 PLC bases come with 110-220VAC, 12-24VDC or 125VDC power supply options and various slot configurations.
DL205 PLC Expansion Modules The D2-260 and D2-250-1
support local expansion. The D2-260 supports local expansion up to
five total bases (one CPU plus four expansion bases) and the
D2-250-1 supports local expansion up to three total bases (one CPU
bases plus two expansion bases). Following are the modules
required for expansion:
D2-CM - The D2-CM expansion base controller module
is placed in the CPU slot of each expansion base. The module
includes a rotary switch for selecting the expansion base number,
as well as PWR, RUN and DIAG LEDs for system status indication.
D2-EM - The D2-EM expansion module attaches to the
right side of each base in the expansion system. It comes with
two RJ-45 cable ports for expansion cables to plug into, a single
ACTIVE LED for system status indication, and a TERM toggle switch
for last and first base termination.