The easiest modular PLC control system to own

DirectLOGIC 205 Modular Programmable Logic Controller

Several bases & modules are available for the DL205 | Download DL205 Specs (pdf - 29.2 MB)

Download base specs (pdf - 849 kb)

The DL205 offers bases in four size configurations with expansion capability:

3-slot base
3-slot base (includes power supply)
110/220 VAC (D2-03B-1)
12/24 VDC (D2-03BDC1-1)

4-slot base
4-slot base (includes power supply)
110/220 VAC (D2-04B-1)
12/24 VDC (D2-04BDC1-1)

6-slot base
6-slot base (includes power supply)
110/220 VAC (D2-06B-1)
12/24 VDC (D2-06BDC1-1)
125 VDC (D2-06BDC2-1)

9-slot base
9-slot base (includes power supply)
110/220 VAC (D2-09B-1)
12/24 VDC (D2-09BDC1-1)
125 VDC (D2-09BDC2-1)

Expansion modules

The D2-260 and D2-250-1 CPUs 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:

expansion moduleD2-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.
expansion moduleD2-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.

Expansion accessories

D2-EXCBL - The D2-EXCBL-1 expansion cable is used to connect D2-EM expansion modules together. The cable is 1 meter in length.
D2-BASECVR - The D2-BASECVR are base covers for expansion connectors. They come in quantities of three.