Koyo's DirectLOGIC programmable controller products, supplied through AutomationDirect, range from nano-sized fixed I/O units to modular systems with thousands of I/O. From simple machine sequencing to process control, you will find a quality programmable controller to suit your application at a fraction of the cost typically charged by our competitors.
DirectLOGIC PLC prices start at $99.00 (D0-05DD)
Our goal is to offer the best PLC prices in the market.
Our smallest PLC offers six I/O combinations of AC, DC, and relay I/O, and advanced programming functions such as PID and drum sequencing.
Eight inputs and six outputs, expandable to 30 I/O total
2 K program memory
4 K data memory
Two communication ports
Supports networking for MODBUS RTU master/slave, a DeviceNET slave option module, and an Ethernet option module
129 instructions, including four PID* loops
Removable terminal block
Windows-based programming software (order DirectSOFT product separately)
One option card slot accepts discrete, analog I/O, high-speed counting/ pulse output and communication modules.

Our first micro PLC to combine fixed I/O of 20 inputs and 16 outputs with four option card slots for expansion (discrete, analog, communication modules), all in the same package. With the DL06, you can use the same PLC panel layout for all applications from 36 to 100 I/O.
14.8 K of total memory
229 instructions, including 8 PID loops
Two communication ports, including RS232/ 422/ 485 capability
Supports networking for MODBUS RTU master/slave, ASCII in/out, a DeviceNET slave option module, and an Ethernet option module
Integrated high-speed inputs and pulse output
Built-in real-time clock/calendar
Optional LCD display for operator interface or maintenance troubleshooting
Four option card slots accept discrete, analog I/O, high-speed counting/ pulse output and communication modules
The DL105 series is a fixed-I/O micro PLC with 10 inputs and eight outputs. Eight configurations are available in combinations of AC, DC, and relay I/O, as well as AC and DC power supplies.
10 inputs and eight outputs
2 K program memory
384 words data memory
91-instruction programming includes time or event-based drum sequencer, timed interrupt, immediate I/O, etc.
7 amp relay outputs
One RS-232C communication port
Removable terminal connectors
Eight I/O configurations

If your application requires the flexibility of a modular control system, a DL205 PLC is the lowest cost, most versatile solution you'll find. In fact, all you need to do is pick out a CPU, plug it in the first slot of the base you choose, and then mix and match various modules into the available slots.
Four base sizes with built-in power supply, including 12/ 24 VDC, 110/ 220 VAC and 125 VDC power sources.
AC/DC discrete in/out, up to 32 points
10 A relay out
12-bit and 16-bit analog inputs and outputs
Temperature inputs
Data communications, including serial and Ethernet modules
Counter input/ pulse output
Remote I/O master and slave, Ethernet and serial remote I/O

This PLC design has been marketed by various name-brand PLC manufacturers for over 20 years. It has masqueraded as the General Electric Series One®, the Texas Instruments Series 305®, and the Siemens SIMATIC TI305®.
Four standard CPUs to choose from, including the D3-350, with PID control and two communication ports
Standard CPUs programmed with handheld programmer or Windows-based software
Specialty CPUs convert a DL305 system into an RTU for Optomux, Pamux, or allow BASIC programming for custom applications
Five, eight, and 10-slot bases
110/ 220 VAC or 24 VDC power supply
AC, DC inputs
AC, DC, and relay outputs
Eight or 12-bit analog input/output
Specialty modules include an ASCII/ BASIC module, high speed counter, and communication interface module

This product line has the widest variety of I/O modules and configurations of all our PLCs. You can build a control system with local/ distributed I/O of up to 3,500 points. Use the built-in PID instruction or specialty modules to perform cost-effective process control. Three CPUs from 6.5 K memory with 1,152 I/O to 30.8 K memory with 3,584 possible I/O, with built-in power supply are offered.
Three CPUs from 6.5 K memory with 1,152 I/O to 30.8 K memory with 3,584 possible I/O, with built-in power supply
Three base sizes
AC/ DC discrete in/out, up to 64 points
Ten amp relay out
12-bit and 16-bit analog inputs and outputs
Thermocouple and RTD inputs
Data communications, including serial and Ethernet modules
High speed counter input and pulse output
Three types of remote I/O, including rack-based, module-based and our terminator field I/O
Serial remote I/O master and slave modules
Ethernet remote I/O master and slave base controllers
Slice I/O master and slave modules
*NOTES:
PID (Proportional, integral, derivative) control: Control algorithm that is used to closely control processes such as temperature, mixture, position, and velocity. The proportional portion takes care of the magnitude of the error. The derivative compensates for the rate of error change. The integral takes care of small errors over time.