Comprehensive Product Summary – NuDAM ND‑6058 Isolated 5 kV Digital 24 Input/Output Module

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### 1. Product Overview
Product Name: NuDAM Isolated 5 kV Digital 24 Input/Output Module
Model: ND‑6058
Series: NuDAM‑6000 Series Distributed Data Acquisition and Control Modules
Article Number: ND‑6058
Manufacturer: ADLINK Technology Inc. (Taipei, Taiwan)

The ND‑6058 is a member of ADLINK’s NuDAM‑6000 family of distributed data‑acquisition and control modules. It provides a high‑density, programmable digital I/O interface with 5 kV isolation for industrial automation, remote monitoring, and process‑control applications. The module emulates the industry‑standard Intel 8255 programmable peripheral interface (PPI) in Mode 0, offering 24 programmable I/O lines plus four dedicated digital inputs. Communication with a host controller is achieved through an RS‑485 two‑wire network, allowing multi‑drop operation of up to 256 modules.

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### 2. Key Features
- 8255 Mode 0 Emulation: Fully compatible with the standard 8255 PPI chip, providing ports A, B, C‑upper, and C‑lower for flexible bit‑level control.
- 28 Digital Channels: 24 programmable I/O lines plus 4 dedicated digital inputs.
- High‑Voltage Isolation: 5 kVrms optical isolation between field I/O and communication circuitry for operator and equipment protection.
- TTL‑Compatible Logic: All I/O lines conform to TTL voltage levels for direct interface with logic devices or opto‑isolated I/O racks (OPTO‑22 compatible).
- Buffered Outputs: Line drivers provide higher current‑drive capability and improved noise immunity.
- Status Read‑Back: Each output bit can be read back for verification.
- Direct Bit Set/Reset: Individual bit manipulation without affecting other bits.
- Watchdog Protection:
- Hardware watchdog (150 ms) for internal fault recovery.
- Host‑programmable watchdog (100 ms – 25.5 s) with user‑defined safe output states.
- Resettable Power Fuse: On‑board protection against external short circuits on field‑power lines.
- RS‑485 Networking: Two‑wire, half‑duplex communication supporting up to 128 modules per segment (256 with repeater).
- ASCII Command Protocol: Simple printable‑character command/response set for easy integration with any host language.
- Industrial‑Grade Construction: ABS enclosure with conformal‑coated PCB for resistance to humidity, salt spray, and chemicals.
- DIN‑Rail or Panel Mounting: Compact form factor suitable for control cabinets and distributed I/O panels.

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### 3. Technical Specifications
| Parameter | Specification |
|----------------|------------------|
| Interface | RS‑485, 2‑wire, half‑duplex differential |
| Communication Speed | 1 200 – 115 200 bps (115.2 kbps for firmware ≥ A4.00) |
| Isolation Voltage | 5 000 Vrms between I/O and logic/communication |
| Programmable I/O Channels | 24 (Ports A, B, C‑upper, C‑lower) |
| Dedicated Digital Inputs | 4 channels |
| Input Logic Levels | Logic 0 ≤ 0.8 V max; Logic 1 ≥ 2.0 V min |
| Output Logic Levels | Logic 0 ≤ 0.5 V max; Logic 1 ≥ 2.4 V min |
| Connector 1 | 10‑pin screw terminal block (power, RS‑485, 4 DI) |
| Connector 2 | 50‑pin female SCSI II (PPI I/O lines) |
| Power Supply | +10 V DC to +30 V DC unregulated |
| Power Consumption | 1.488 W typical |
| Isolation Type | Optical isolation between field and logic circuits |
| Watchdog Timers | Internal 150 ms; Host‑programmable 100 ms – 25.5 s |
| Operating Temperature | −10 °C to +70 °C |
| Storage Temperature | −25 °C to +80 °C |
| Case Material | ABS plastic with captive mounting hardware |
| Mounting | DIN‑rail or wall/panel mount |
| Compliance | CE Class A EMC conformity |

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### 4. Functionality
The ND‑6058 acts as a distributed digital I/O node on an RS‑485 network. A host computer or PLC communicates using ASCII commands to configure ports, read inputs, or set outputs. Each module has a unique address (00–FF hex).

Operation Principle:
- The internal microcontroller interprets host commands and controls the 8255‑emulated I/O ports.
- Ports A and B are byte‑wide; port C is split into upper and lower nibbles, each configurable as input or output.
- Four additional dedicated inputs (DI0–DI3) are provided on the terminal block for status or trigger signals.
- All I/O lines are TTL‑compatible and can directly drive opto‑isolated racks or solid‑state relays.
- The module supports bit‑level read/write, port‑wide operations, and synchronized sampling with other NuDAM modules.

Typical Applications:
- Industrial process control and machine automation
- Remote digital signal monitoring and alarm systems
- PLC expansion via RS‑485 bus
- Laboratory data acquisition and test stands
- Building automation and energy‑management systems

Compatibility:
- Fully interoperable with other NuDAM‑6000 modules (analog I/O, relay, counter, etc.)
- Communicates through ADLINK ND‑6520 RS‑232/RS‑485 converter, ND‑6530 USB converter, or ND‑6531 addressable RS‑485/RS‑232 converter.

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### 5. Components & Accessories
Included:
- ND‑6058 module
- 10‑pin screw terminal plug (for power, RS‑485, and 4 DI)
- 50‑pin female SCSI II connector for 24 programmable I/O lines
- User documentation (NuDAM‑6000 User’s Guide)

Optional/Related:
- ND‑6520 RS‑232 ↔ RS‑485 converter
- ND‑6510 RS‑485 repeater (for >128 modules or >4000 ft bus)
- ND‑6530 USB ↔ RS‑485 converter
- ND‑6531 addressable RS‑485 ↔ RS‑232 converter
- DIN‑rail mounting kit
- Shielded twisted‑pair RS‑485 cables (120 Ω characteristic impedance)
- 120 Ω termination resistors

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### 6. Installation & Setup
Requirements:
- DC power supply +10 V to +30 V (typ. 24 V industrial supply)
- RS‑485 two‑wire bus (Data+, Data–) with 120 Ω termination at both ends
- Host computer with RS‑232 port and ND‑6520 converter or USB port with ND‑6530

Mounting:
- Snap onto DIN rail or secure to panel using captive hardware.
- Maintain adequate ventilation and avoid high‑EMI sources.

Wiring:
- Connect RS‑485 Data+ and Data– to the network bus.
- Connect +Vs and GND to a regulated DC supply.
- For shielded cable, ground the shield at each bus connection.

Initialization:
- Factory defaults: Address 01 (Hex), 9600 bps, checksum disabled, watchdog disabled.
- To change address or baud rate, short the DEFAULT* pin to GND and power on to enter Default State (Address 00, 9600 bps).
- Use NuDAM Administration Utility to assign unique ID and communication parameters.

Network Topology:
- Multi‑drop RS‑485 bus up to 4000 ft (1200 m).
- Maximum 128 modules per segment; use ND‑6510 repeater for extension.
- Terminate both ends with 120 Ω resistors (±2 %).

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### 7. Performance & Capabilities
- I/O Speed: Deterministic digital response over RS‑485 at up to 115.2 kbps.
- Capacity: 28 channels total (24 programmable I/O + 4 dedicated inputs).
- Logic Compatibility: TTL levels (0 – 5 V).
- Isolation: 5 kVrms optical barrier protects host and network from field voltages.
- Noise Immunity: Internal filtering and EMI‑shielded ABS enclosure.
- Reliability: Hardware watchdog resets module on fault; software watchdog forces safe outputs on host failure.
- Limitations: Not intended for direct AC mains switching without external relays or opto‑isolators; TTL logic only.

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### 8. Standards & Compliance
- Electrical Isolation: 5 000 Vrms tested per IEC 61010‑1 industrial safety requirements.
- EMC Compliance: CE Class A (industrial environment).
- Communication Standard: EIA RS‑485 (two‑wire half‑duplex differential).
- Environmental Protection: Conformal coating for humidity and chemical resistance.
- Quality Assurance: Manufactured under ADLINK ISO 9001 certified processes.

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### 9. Additional Information
Warranty: One‑year limited hardware warranty against defects in materials and workmanship from date of purchase.
Service Policy: Return to ADLINK or authorized service center (prepaid shipping) for repair or replacement.
Exclusions: Damage from misuse, modification, or operation beyond specifications voids warranty.
Support Resources:
- NuDAM Administration Utility software for Windows (installation, configuration, diagnostics, calibration).
- Comprehensive ASCII command set for custom programming in C/C++, VB, LabVIEW, or PLC environments.
- Application notes and wiring examples for TTL inputs, switch contacts, and relay interfaces.
Maintenance: Periodic inspection of terminal connections and bus termination; keep module free of dust and moisture.
Firmware Updates: Field‑upgradeable via RS‑485 network using ADLINK utility tools.

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### Summary
The ADLINK NuDAM ND‑6058 is a robust, high‑isolation, programmable digital I/O module designed for distributed control systems. By combining 8255‑compatible flexibility, 5 kV isolation, and RS‑485 networking, it enables reliable, noise‑immune digital interfacing across long distances. Its watchdog protection, configurable safe states, and simple ASCII protocol make it ideal for mission‑critical industrial automation, data acquisition, and remote monitoring applications where deterministic digital control and electrical safety are paramount.