Automate Direct DL06 Micro PLC

The first volume user manual (third edition Rev. D) of the Automation Direct DL06 micro PLC introduces the hardware specifications, installation and wiring specifications, CPU operating mechanism, memory mapping, high-speed I/O, and basic programming architecture of 9 models. It supports 20 inputs/16 outputs, dual serial communication, 229 instructions, PID closed-loop and RLLPLUS stage programming, meets Class 1 Div.2 explosion-proof and UL/CE certification, and is designed for logic control and motion control scenarios of small automation equipment.

Hardware core specifications

Project parameters

Local I/O 20 inputs (X0~X23), 16 outputs (Y0~Y17), octal addressing

229 instructions (Boolean, Math, PID, High Speed I/O)

Program memory 14.8K words (7.6K ladder diagram+7.6K V memory)

Scanning speed Boolean instruction<0.6 μ s, 1K steps approximately 1-2ms

Communication port Port1 (RS232 9600 fixed); Port2 (multi protocol, 300~38400bps)

Working temperature 0~55 ℃, humidity 5~95%, no condensation

Certified UL, CE, cUL, Class 1 Division 2

Installation and wiring specifications

Installation requirements

Method: DIN rail 35mm, horizontal installation

Spacing: Up and down ≥ 30mm, left and right ≥ 20mm

Grounding: Single point common grounding, shielded wire double ended grounding

Wiring rules

Wire gauge: 16~22AWG, single end ≤ 2 pieces

Protection: There is no built-in fuse in the output, it is recommended to add an external fast fuse

Inductive load: DC coil with parallel freewheeling diode, AC coil with MOV/TVS

I/O type

Input: DC input supports drain/source type, AC input 80~132VAC

Output: Relay (2A/point), transistor (0.5~1A/point), AC thyristor (0.5A/point)

CPU and system operation

work mode

RUN: Execute program, refresh I/O

STOP: Stop output, prohibit program changes

TERM: Allow programming/monitoring/mode switching

scanning process

Power on initialization → Read input → Peripheral service → Program execution → PID operation → Write output → Diagnosis

power-down retention

Supercapacitors: hold for several hours

Optional battery D2-BAT-1: Keep for 5 years

Default hold area: C1000~C1777, V400~V37777, CTO~CT177

Diagnostic protection

Watchdog: default 200ms, timeout shutdown

Status LED: PWR/RAN/CPU/Communication Transmission and Reception Status

Error code: stored in V7750~V7757, supports historical queries

Memory Mapping and Resources

Addressing rule: All use octal, no 8 or 9 digits

core resources

Control relay (C): 1024 points

Timer (T): 256 pieces

Counter (CT): 128 pieces

Stage (S): 1024 (RLLPLUS)

Special relays (SP): 512 pieces

V Memory: 7616 words, user available 7488 words, 128 words non-volatile

High speed I/O (HSIO) 6 modes

Mode 10: High speed counter (up to 7kHz)

Mode 20: A/B phase orthogonal counter

Mode 30: Pulse output (up to 10kHz, driving step)

Mode 40: External/Timer Interrupt

Mode 50: Pulse capture (minimum 70 μ s)

Mode60: Adjustable input filtering

Programming Architecture

Standard RLL: ladder logic, Boolean/Math/Table instructions

DRUM sequencer: 16 step sequential control, triggered by time/events

RLLPLUS Stage Programming: State Machine Process, Suitable for Sequential Actions

Communication Protocol

Port 1: K-sequence, DirectNET, MODBUS RTU (slave only)

Port 2: Supports master/slave stations, supports MRX/MWX commands for reading and writing network data

Key issues

Question 1: How are the 9 models of DL06 divided by I/O type? What are the core advantages of DC models compared to AC models?

Answer: There are 9 types based on input (AC/DC), output (relay/transistor/AC), and power supply (AC/DC). The DC input model supports high-speed I/O (counter/pulse output/interrupt), with a response time of up to 70 μ s, and can be used for simple motion control; The AC model does not have high-speed function and is only suitable for high voltage scenarios.

Question 2: How is the I/O response time of DL06 calculated? How to achieve the fastest response?

Answer: Standard response=input delay+scan time+output delay; The fastest achievable input delay+instruction execution time. Implement the fastest immediate I/O command, disable X0~X3 input filtering, use high-speed I/O mode, and avoid waiting for scan cycles.

Question 3: How to configure the power-off maintenance of DL06? Which regions are kept by default?

Answer: Maintain the range through AUX57 or software settings. Default hold: Control relays C1000~C1777, V memory V400~V37777, counters CT0~CT177; The timer and stage are not maintained by default. Long term maintenance requires the installation of D2-BAT-1 batteries.