Description
Product Introduction
The AutomationDirect D0-06DD1-D is the DC-powered version of the DirectLOGIC DL06 micro PLC. It combines a complete CPU, power supply, and discrete I/O in a single compact package. The unit requires an external 12-24 VDC supply and provides 20 DC inputs (sinking or sourcing) plus 16 DC sinking outputs rated 1 A per point.
Two built-in serial ports support programming, DirectNET, Modbus RTU, and ASCII communication. The first few inputs and two outputs can be configured for high-speed counting, pulse catch, interrupt, or pulse-train output functions. Four option-card slots allow expansion with additional discrete, analog, or communication modules. Programming is performed with DirectSOFT software using ladder logic or sequential function chart.
This model is widely used in machine control, packaging, material handling, and small process applications where a self-contained, DC-powered controller is preferred.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Power Supply | 12-24 VDC (10.8–26.4 VDC) |
| Discrete Inputs | 20 points, 12-24 VDC, sinking/sourcing |
| Input Commons | 5 isolated (4 points per common) |
| Discrete Outputs | 16 points, 6-24 VDC, sinking (NPN) |
| Output Current | 1 A/point max |
| Output Commons | 4 (4 points per common) |
| Total Memory | 14.8k words (approx. 7.7k ladder + 7.5k data) |
| High-Speed Features | Selectable on first inputs / two outputs (counter, pulse, interrupt, PTO up to 10 kHz) |
| Communication Ports | (1) RS-232 (RJ12) + (1) RS-232/422/485 (DB15) |
| Protocols | DirectNET, Modbus RTU, ASCII, K-sequence |
| Expansion | Up to 4 option modules |
| Real-Time Clock | Yes |
| Programming Software | DirectSOFT v4.0 or later |
| Retentive Memory | Yes (super-capacitor; optional battery for longer retention) |
Application Scenarios & The “Trench” Experience
It’s 02:30 and the small packaging machine has lost its controller. The old unit is no longer available from the OEM. You need a drop-in D0-06DD1-D that accepts the existing 24 VDC supply, matches the I/O count, and can be programmed with the same DirectSOFT project.
- Machine Control & Packaging – Stand-alone or small multi-station machines – Built-in high-speed I/O supports simple positioning and counting without external modules.
- Material Handling / Conveyors – Indexing, sorting, and basic sequencing – Compact size and DC power simplify panel design.
- OEM Equipment Retrofits – Replacing aging DL05/DL06 units – Same programming software and similar I/O layout reduce migration effort.
- Distributed Control Nodes – Small remote stations powered from the same 24 VDC rail as the sensors and actuators – Eliminates the need for a separate AC supply.
Field Case Study
A midwestern packaging OEM lost the original controller on a glue-apply station. Lead time for a new unit was several weeks. A tested D0-06DD1-D was installed the same day. After loading the existing DirectSOFT program and verifying the high-speed input configuration, the station returned to production within three hours. The plant later standardized on the DC-powered DL06 for similar small machines.
D0-06DD1-D
D0-06DD1-D
Transparency SOP: Quality Assurance & Testing
We don’t just ship boxes; every unit is verified.
- Inbound Inspection – OEM part-number and revision check, terminal-block condition, and housing integrity.
- Live Rig Testing – Powered at 24 VDC; I/O point verification, serial-port communication, and high-speed feature checks performed.
- Electrical Parameter Checks – Supply current, input/output voltage ranges, and isolation confirmed.
- Memory & Firmware Verification – Program memory access and real-time clock function tested.
- Final QC & Packaging – Functional burn-in, documentation of serial/revision, and protective packaging for industrial shipment.
The Veteran’s Tech Trap Guide
⚠️ Power supply polarity and range. The D0-06DD1-D requires 12-24 VDC. Reverse polarity or over-voltage will damage the unit. Confirm the supply before connecting.
❗ High-speed I/O conflicts. The first inputs and two outputs share hardware resources. You cannot use high-speed inputs and pulse-train outputs at the same time. Plan the configuration carefully.
⚠️ Terminal-block orientation. Removable terminal blocks are keyed but can be forced incorrectly. Always verify labeling before powering the unit.
❗ Firmware version awareness. Older firmware had known serial-port vulnerabilities. Prefer units at or above the recommended revision when security is a concern.
Frequently Asked Questions (FAQ for Conversion)
Q: What is the difference between D0-06DD1 and D0-06DD1-D?
A: The D0-06DD1 is AC-powered (120-240 VAC). The D0-06DD1-D is the DC-powered version (12-24 VDC). I/O counts and core features are otherwise identical.
Q: Can it be expanded?
A: Yes. Four option-card slots accept discrete, analog, temperature, or communication modules, allowing expansion up to roughly 100 I/O points.
Q: What programming software is required?
A: DirectSOFT version 4.0 or later. Ladder logic and sequential function chart are supported.
Q: What warranty is provided?
A: 12 months from ship date on tested new-surplus units.
Q: Why is this sometimes cheaper than list price?
A: Genuine AutomationDirect/Koyo units move through surplus channels. They remain original hardware; lower pricing reflects inventory dynamics rather than refurbished product.
Q: Does it support high-speed counting or pulse output?
A: Yes. Selected inputs support up to 7 kHz counting or interrupt functions. Two outputs can generate pulse trains up to 10 kHz (CW/CCW or step/direction). These features are mutually exclusive.
Q: Is a battery required for memory retention?
A: A built-in super-capacitor retains data for up to several weeks. An optional battery extends retention to years.
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