Comprehensive Product Summary – CONTEC CNT16‑8L(FIT)GY Ethernet 8‑Channel 16‑bit Counter Module

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### 1. Product Overview

Product Name: Ethernet 8 Counter 16‑bit Up 5 VDC
Model: CNT16‑8L(FIT)GY
Series: F&eIT Series
Article Number: CNT16‑8L(FIT)
Manufacturer: CONTEC CO., LTD. (Osaka, Japan)

The CONTEC CNT16‑8L(FIT)GY is a compact, Ethernet‑based, 8‑channel isolated up‑counter module designed for industrial and embedded control systems. It belongs to CONTEC’s F&eIT (Factory & Embedded Internet Technology) modular I/O family, which enables distributed measurement and control over Ethernet networks. The module provides 16‑bit up‑counting capability per channel, opto‑isolated inputs, and a 5 VDC external power interface, making it suitable for high‑speed pulse counting, event monitoring, and digital signal acquisition in automation environments.

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### 2. Key Features

- Eight 16‑bit Up‑Counters:
Each of the eight channels supports 16‑bit binary up‑counting (0x0000 – 0xFFFF), allowing independent pulse accumulation.

- Opto‑Isolated Inputs:
All input channels are isolated via opto‑couplers, ensuring high noise immunity and protection against ground loops or transient surges.

- 5 VDC External Power Operation:
The CNT16‑8L(FIT)GY variant operates with a 5 VDC external supply, optimized for low‑voltage logic systems and embedded controllers.

- Digital Noise Filter:
A configurable digital filter (0.25 µs – 131.072 ms) suppresses input chattering and electrical noise, ensuring accurate pulse detection.

- DIN‑Rail Mounting:
Standard 35 mm DIN‑rail mounting with one‑touch installation; modules can be stacked laterally without a backplane.

- Device ID Rotary Switch:
A front‑panel rotary switch allows assignment of Device IDs (0–7) for multi‑module configurations.

- Ethernet‑Based Modular System:
Designed for use with CONTEC’s F&eIT controllers (CPU‑CAxx(FIT)GY, CPU‑SBxx(FIT)GY) and servers (SVR‑MMF2(FIT), SVR‑MMF(FIT)GY).

- Flexible Control Interfaces:
Supports I/O address mapping, memory mapping, Windows API drivers (API‑CAP(W32), API‑SBP(W32)), FIT protocol, and web‑based configuration.

- Interrupt Support:
Combined interrupt output for all eight channels; interrupt generated on count carry‑up events.

- Compact and Lightweight:
25.2 mm × 64.7 mm × 94.0 mm, 100 g, ideal for dense control panels.

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### 3. Technical Specifications

Electrical Characteristics

| Parameter | Specification |
|------------|---------------|
| Power Supply (External) | 5 VDC ± 10 % |
| Internal Power Consumption | 5 VDC ± 5 %, 150 mA (max) |
| Input Type | Opto‑isolated, compatible with current sink/source outputs |
| Input Resistance | 1.2 kΩ |
| Input ON/OFF Current | ON ≥ 3.8 mA (min), OFF ≤ 0.16 mA (max) |
| Response Frequency | 10 kHz (max), 50 % duty |
| Count Range | 16‑bit (0x0000 – 0xFFFF) |
| Digital Filter Range | 0.25 µs – 131.072 ms (21 selectable steps) |
| Interrupt Levels | IRQ 5, 7, 9 (via CPU‑SBxx(FIT)GY) |
| Signal Extension Distance | Approx. 50 m (depending on wiring environment) |

Mechanical Characteristics

| Parameter | Specification |
|------------|---------------|
| Dimensions (W × D × H) | 25.2 × 64.7 × 94.0 mm (excluding protrusions) |
| Weight | Approx. 100 g |
| Mounting | 35 mm DIN‑rail (standard) |
| Connection Method | Stack connector (side connection) |
| Connector Type | 12‑pin, 3.81 mm pitch, 8 A rated (Phoenix Contact MC1,5/12‑GF‑3,81) |
| Included Plug | FRONT‑MC1,5/12‑ST‑3,81 (Phoenix Contact) |
| Applicable Wire Size | AWG 28 – 16 |

Environmental Conditions

| Parameter | Specification |
|------------|---------------|
| Operating Temperature | 0 – 50 °C |
| Storage Temperature | −10 – 60 °C |
| Operating Humidity | 10 – 90 % RH (non‑condensing) |
| Corrosive Gases | None |
| Floating Dust | Not excessive |

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### 4. Functionality

The CNT16‑8L(FIT)GY functions as an Ethernet‑connected expansion module that counts pulse signals from external devices. Each channel independently counts rising edges of input pulses, storing 16‑bit values accessible via the controller or host PC.

Operation Principle:
- External pulse signals are fed into opto‑isolated inputs.
- The internal counter increments on each valid pulse.
- A digital filter ensures only stable transitions are counted.
- When the counter overflows (FFFFh → 0000h), a carry‑up interrupt can be generated.
- Count data can be read or reset via I/O or memory‑mapped commands.

Use Cases:
- Production line pulse counting (encoders, sensors)
- Flow or rotation measurement
- Event logging and digital signal monitoring
- Integration with PLCs or PC‑based control systems

Compatibility:
- Controllers: CPU‑CAxx(FIT)GY, CPU‑SBxx(FIT)GY
- Servers: SVR‑MMF2(FIT), SVR‑MMF(FIT)GY
- Software Interfaces: FIT Protocol, API‑CAP(W32), API‑SBP(W32), web browser configuration

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### 5. Components & Accessories

Package Contents:
1. CNT16‑8L(FIT)GY module (or CNT16‑8(FIT)GY variant)
2. Interface connector plug (Phoenix Contact FRONT‑MC1,5/12‑ST‑3,81)
3. CD‑ROM (F&eIT Series Setup Disk) containing drivers, manuals, and utilities
4. First Step Guide (printed quick‑start manual)

Optional Accessories:
- Additional connector plugs (MC1,5/12‑GF‑3,81)
- F&eIT controller modules and power supplies
- Ethernet cables and DIN‑rail mounting hardware

Interface Connector Pinout:
- COM 0 (+/− common)
- IN 0 – IN 3 (pulse inputs, group 0)
- COM 1 (+/− common)
- IN 4 – IN 7 (pulse inputs, group 1)
- Two NC (no‑connect) pins

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### 6. Installation & Setup

Mounting:
- Snap onto a 35 mm DIN rail using the integrated latch.
- Stack laterally with other F&eIT modules via side connectors.

Wiring:
- Strip wire insulation 9–10 mm.
- Insert into the connector plug and tighten screws.
- Use AWG 28–16 wires; avoid pulling on cables when removing connectors.

Device ID Configuration:
- Set the rotary switch (0–7) on the front panel to assign a unique ID.
- Factory default: ID = 0.

Connection to Controllers:
- Connect via stack connector to CPU‑CAxx(FIT)GY or CPU‑SBxx(FIT)GY.
- Ensure controller power is OFF during installation.

LED Indicators:
- Eight green LEDs (IN0–IN7) indicate input activity (ON = current flow/pulse detected).

Software Setup:
- Install drivers from the F&eIT Setup Disk.
- Configure via Windows API, FIT protocol, or web interface.
- Assign I/O or memory addresses based on Device ID.

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### 7. Performance & Capabilities

| Parameter | CNT16‑8(FIT)GY | CNT16‑8L(FIT)GY |
|------------|----------------|----------------|
| External Power | 12–24 VDC ± 15 % | 5 VDC ± 10 % |
| Response Frequency | 5 kHz (max) | 10 kHz (max) |
| Input Resistance | 3 kΩ | 1.2 kΩ |
| Input Current (per ch.) | 4 mA @ 12 V, 8 mA @ 24 V | 4 mA @ 5 V |
| Digital Filter Range | 0.25 µs – 131.072 ms | 0.25 µs – 131.072 ms |
| Interrupt Output | Combined for all 8 channels | Combined for all 8 channels |
| Internal Power | 5 VDC 150 mA (max) | 5 VDC 150 mA (max) |

Performance Notes:
- High‑speed counting up to 10 kHz enables accurate pulse measurement.
- Opto‑isolation ensures reliable operation in noisy industrial environments.
- Digital filtering prevents false counts due to contact bounce.
- Interrupts allow event‑driven data acquisition.
- Count data remains stable when counting is stopped.

Limitations:
- No analog or output channels.
- All channels share a single interrupt line.
- Digital filter applies globally (not per channel).

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### 8. Standards & Compliance

- FCC Part 15 Class A (for commercial environments)
- CE Marking (implied for industrial electronic equipment)
- RoHS Compliance: Components selected to meet environmental directives.
- Safety Ratings:
- Operating temperature: 0–50 °C
- Humidity: 10–90 % RH (non‑condensing)
- No corrosive gases or excessive dust
- Isolation: Opto‑coupler isolation between input channels and logic circuits.
- EMC Considerations: Designed to minimize radiated and conducted emissions.

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### 9. Additional Information

Warranty:
- Limited one‑year warranty against defects in materials and workmanship.
- Excludes damage from misuse, modification, or improper handling.
- Requires Return Merchandise Authorization (RMA) for service.

Support & Resources:
- Websites:
- Japanese: [https://www.contec.co.jp](https://www.contec.co.jp)
- English: [https://www.contec.com](https://www.contec.com)
- Chinese: [https://www.contec.com.cn](https://www.contec.com.cn)
- Downloadable drivers, manuals, and sample programs available online.
- Technical support via authorized distributors or CONTEC offices.

Maintenance:
- Periodically inspect ventilation slits for dust or obstruction.
- Avoid exposure to vibration, shock, or magnetic fields.
- Store in original packaging at room temperature, away from moisture and static electricity.

Disposal:
- Dispose of in accordance with local electronic equipment regulations.

Firmware & Software Updates:
- Updates for drivers and FIT protocol libraries available on CONTEC’s website.
- Compatible with Windows‑based development environments using API‑CAP(W32) and API‑SBP(W32).

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### Summary

The CONTEC CNT16‑8L(FIT)GY is a robust, Ethernet‑enabled, 8‑channel 16‑bit counter module engineered for precision pulse counting and digital signal monitoring in industrial automation systems. Its opto‑isolated design, configurable digital filtering, and modular F&eIT architecture provide high reliability and scalability. With flexible control interfaces—ranging from direct I/O mapping to network‑based memory access and web configuration—it integrates seamlessly into distributed control networks. Compact dimensions, DIN‑rail mounting, and comprehensive software support make it an ideal choice for OEMs, system integrators, and engineers seeking reliable, high‑speed counting solutions in compact form factors.