The original benchmark PLC for OEM & machine builders in modular PLC's. Launched in 1979 and still available today.
Why? Because they are still doing thei job. This is the most multi branded PLC ever.
What is the DL 305 PLC Series?
The DL305 series is a small modular PLC that has been marketed by various name-brand PLC manufacturers for over 21 years. This Koyo design revolutionized the small PLC market, and is still a good performer and a great value.
What can I do with it?
•Maintain or upgrade any installed GE Series One, Texas Instruments Series 305, or Siemens SIMATIC TI305 system
• Build a systemthatmeets Class I Division II classification
• Build RTU I/O stations for a host computerwith a serial or parallel interface
• Build an intelligent RTU that programs in the BASIC language
This design was so well-liked when it was introduced that it became the most popular privately labeled PLC in history. Best of all, almost every part produced in its 27-year history is interchangeable.
GE nicknamed it “America’s Most Popular PLC”
In 1983, General Electric decided to private label the Koyo SR21
design. They called it the General Electric Series One and
changed the color from Koyo yellow to black. The product sold so
well they nicknamed it “America’s Most Popular PLC.”
Texas Instruments called it the “Best Value PLC”
In 1989, Texas Instruments began to private label the Koyo SR21 design. They named it the Series 305 and changed the plastic color to light gray. The product was enhanced and did so well for Texas Instruments that they nicknamed it the “Best Value PLC.”
Siemens also called it the “Best Value PLC”
In 1991, Siemens Industrial Automation decided to private label the Koyo SR21 design. They named it the SIMATIC TI305 and changed the color to charcoal grey. Once again, the product line continued to receive enhancements and the nickname “Best Value PLC” continued at Siemens.
AutomationDirect calls it a “PLC Classic” and keeps it current
In 1994, AUTOMATIONDIRECT added more enhancements with Windows-based DirectSOFT, and in 1997 introduced the D3-350 CPU, which offered updated features while maintaining compatibility
Credibility in numbers
The Koyo DL305 design has been one of the most widely marketed PLCs in history. Millions of modules have been sold, proving that they are extremely reliable and well-suited for many applications, and they cost less from us now than they ever did from any of the guys who previously marketed this solid PLC line.