VersaMax Micro PLC | Compact Controller for Light Industry Automation
VersaMax Micro PLC
Compact, high-performance controller built for light industry automation. Its small footprint fits tight electrical cabinets, while modular I/O expansion (up to 170 points) adapts to packaging lines, material conveyors, and small production systems. UL/CE certified for reliable, hassle-free operation in light-duty automation applications.
Key Features
- Compact Design: Small footprint ideal for tight installation spaces, with palm-sized VersaMax Nano Controller for applications with limited room
- Powerful Performance: Fast scan times with robust instruction set, 128KB maximum memory capacity, supporting up to 64 native I/O points expandable to 170 points
- Modular Architecture: Compatible with various I/O expansion modules and communication options for flexible configuration
- Easy Programming: PAC Machine Edition software with intuitive interface, supporting Ladder Diagram, Function Block Diagram, and Structured Text languages with online programming capability
- Strong Compatibility: Compliant with UL, CUL, and CE standards, communicating with external devices via multiple protocols including Modbus
Technical Specifications
| Parameter Category |
Specific Parameters |
Details |
| Performance |
Program Memory |
Up to 128KB; Micro Plus Series: 48KB RAM + Flash |
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Scan Speed |
Boolean instruction execution speed: 0.8ms/k (typical), high-speed scanning for real-time control |
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Counters/Timers |
4 high-speed counters (max 100kHz), 1 PWM output (65kHz), 32-bit counters |
| I/O Configuration |
Native I/O Points |
14/20/28/40/64 points (64 points = max native I/O in the series) |
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Expandable I/O Points |
Up to 170 points via expansion modules; supports mixed configuration of 4 discrete/analog modules |
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Analog Processing |
12-bit conversion accuracy; supports 0-10VDC, 4-20mA signals (via expansion modules) |
| Communication Interfaces |
Standard Interfaces |
RS-232 (RJ45); RS-485 (DB15) on selected models |
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Optional Modules |
Ethernet module (10/100Mbps RJ45), USB 2.0 Slave, Modbus TCP/RTU modules |
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Supported Protocols |
Modbus RTU Master/Slave, Modbus TCP Server/Client, SNP/X, SRTP |
| Power Specifications |
Supply Voltage |
24VDC (19.2-30VDC wide range) or 115/240VAC (optional) |
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Power Consumption |
Typical <10W (24VDC supply); <16VA (AC-powered models) |
| Physical & Environmental |
Dimensions |
Compact design; Nano model: palm-sized; 64-point model: approx. 150×80×60mm |
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Operating Temperature |
-20℃~60℃, suitable for harsh industrial environments |
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Certifications |
UL, CUL, CE, Class 1 Division 2 certified |
| Programming & Compatibility |
Programming Software |
PAC Machine Edition (Proficy Machine Edition) |
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Programming Method |
Online programming (no controller shutdown required), offline program download via memory module |
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Programming Languages |
Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST) |
Product Models
| Category |
Model Series |
Specific Model |
Key Specifications |
Application Scenarios |
| Core Controllers |
14-Point Micro PLC |
IC200UAR014 |
14 I/O points, 24VDC power supply, built-in RS-232 |
Small conveyors, single-point inspection control |
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20-Point Micro PLC |
VersaMax Micro 20 Point |
20 I/O points, 24VDC / 115/240VAC optional |
Small packaging equipment, simple assembly lines |
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28-Point Micro PLC |
VersaMax Micro 28 Point |
28 I/O points, modular design, expandable |
Small food processing equipment, HVAC control |
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40-Point Micro PLC |
VersaMax Micro 40 Point |
40 I/O points, high-speed counter (100kHz) |
Material sorting, small filling lines |
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64-Point Micro PLC |
IC200UAR064 |
64 I/O points (40 inputs + 24 relay outputs), 24VDC power supply |
Medium packaging lines, multi-station assembly equipment |
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IC200UAR064-AC |
64 I/O points (40 inputs + 24 relay outputs), 115/240VAC power supply |
Medium production lines adapted to overseas industrial power grids |
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IC200UAR064-DC |
64 I/O points (40 inputs + 24VDC source outputs), 24VDC power supply |
Medium control scenarios for DC-driven equipment |
| Expansion Modules |
14-Point Expansion Unit |
VersaMax Micro 14 Point Expansion |
14 I/O expansion points, 24VDC power supply |
I/O expansion for 14-point controllers |
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28-Point Expansion Unit |
VersaMax Micro 28 Point Expansion |
28 I/O expansion points, 24VDC power supply |
Function expansion for 28/40-point controllers |
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64-Point Expansion Unit |
VersaMax Micro 64 Point Expansion (24VDC) |
64 I/O expansion points (40 inputs + 24 relay outputs), 24VDC power supply |
Large-scale expansion for 64-point controllers |
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VersaMax Micro 64 Point Expansion (AC) |
64 I/O expansion points (40 inputs + 24 relay outputs), 115/240VAC power supply |
Expansion needs for high-voltage overseas scenarios |
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Analog Expansion |
VersaMax Micro 4 Channel Thermocouple |
4-channel thermocouple/mV input, 12-bit accuracy |
Temperature detection equipment expansion |
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VersaMax Micro 6 Channel Analog |
6-channel analog input/output, supports 0-10VDC / 4-20mA |
Pressure, flow sensor signal acquisition |
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Special Function Expansion |
VersaMax Micro RTD Expansion |
Supports Pt100, temperature range -100~+600℃, 2/3-wire type |
Industrial furnace temperature, cold chain temperature control expansion |
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VersaMax Micro Motion |
2 independent-axis motion control, supports PWM output (65kHz) |
Small servo/stepper motor control |
| Communication Expansion Boards |
Universal Communication Expansion |
VersaMax Micro 20/40/64 USB Slave |
USB 2.0 Slave, compatible with 20/40/64-point models |
Local program download, data transmission |
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VersaMax Micro 20/40/64 RS-232 |
RS-232 communication expansion, compatible with 20/40/64-point models |
Serial device networking communication |
Application Fields
Industrial Automation Production Lines: Controls various production line processes including material conveying, equipment start-stop, and quality inspection for complete automation.
Packaging Machinery: Precisely controls packaging processes such as metering, filling, and sealing to ensure packaging quality and efficiency.
Motion Control: When paired with servo modules, controls servo motors for high-precision positioning and speed control applications including CNC machine tools and robotics.
Frequently Asked Questions
Using Proficy Machine Edition to connect the PLC via serial port (RJ45), it keeps showing "connecting" but never succeeds—Is the cable broken?
Check these points: ① Use genuine IC200CBL500A cable instead of homemade; ② Verify Pin 1 on RJ45 end is correctly identified; ③ Ensure COM port isn't occupied by other applications. Also confirm baud rate (default 19200), parity (odd), and stop bit (1) match PLC settings.
The PLC powers on normally, but I/O modules don't respond—Is the grounding incorrect?
Check DIN rail grounding—all modules must be mounted on a single 7.5mm×35mm DIN rail with conductive, unpainted finish. The rail must be properly grounded to factory main ground (resistance ≤4Ω) using compliant DIN EN 50032 standard rails.
The 15-pin SNP port has no communication—The cable and software settings are correct, but the LED doesn't flicker?
Test 5V power on SNP port first. Solutions: ① Use RJ45 RS-232 port instead; ② Replace internal fuse of SNP port; ③ Use workaround on RS-485 port if port is damaged. Avoid hot-plugging SNP cable to prevent port damage.
The PLC works fine in the lab but keeps tripping in Southeast Asia's high-temperature workshops—Why?
Install cooling fan in electrical cabinet and mount PLC away from heat sources. For unstable grids: ① Use voltage stabilizer; ② Replace with wide-voltage version (19.2-30VDC). Clean dust from PLC vents monthly to prevent overheating.
Modbus TCP communication with Allen-Bradley devices fails—The protocol is supported, but no data is received?
Update to firmware 4.0 or higher. Ensure: ① PLC is configured as Server and Allen-Bradley device as Client (or vice versa); ② Don't exceed 8 Modbus TCP channels limit; ③ Disable factory network firewalls temporarily if blocking port 502.
After expanding analog modules, the PLC displays "module not recognized"—The firmware is up to date. What's wrong?
Micro series supports maximum of 4 expansion modules. Connect modules in order: "Controller → Power Module → Expansion Modules". Ensure expansion cable (IC200CBL501) is fully inserted and controller power capacity is adequate.
The PLC's 5V power output is insufficient to drive external sensors—Overseas sensors draw more current than expected.
Use independent 5V regulated power supply for sensors—avoid loading PLC's internal power (limited to 100mA). For 24VDC sensors, connect to PLC's 24VDC power input for more stable current output.
Online programming causes PLC to freeze—Can't edit logic without stopping the controller.
Only VersaMax Micro Plus models with firmware 4.0+ support online programming. For older models: ① Backup program first; ② Use offline programming during production breaks. Update firmware to enable online programming capability.
The PLC's digital input points don't respond to NPN sensors—Sensors work when tested independently.
Check input module type and wiring—sinking input modules require sensor output to connect to GND, while sourcing modules connect to 24VDC. For cable lengths exceeding 50m, use shielded cable and ground one end to prevent electromagnetic interference.
Voltage mismatch—The PLC is 24VDC, but the overseas factory uses 110VAC. How to adapt?
Use reliable AC-DC converter (110VAC-to-24VDC regulated, 50W or higher). For unstable voltage regions, add voltage stabilizer before converter. Choose UL/CE-certified converters to comply with overseas safety standards.