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Omron NX-ID5342 NX-series digital input unit — front face with 16 input status LEDs and push-in terminal openings

Omron NX-ID5342 — 16-Point NPN Digital Input

SKU: NX-ID5342

USD 41.00

Omron NX-ID5342 is a 16-point NPN digital input unit for the NX-series EtherCAT I/O bus — 24 VDC, 0.02-0.4 ms response, 12 mm wide, screwless push-in connector.

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Product Overview

The NX-ID5342 is the 16-point NPN digital input unit in Omron's NX I/O family. It mounts on the right side of an NX102 / NX1P2 / NJ501 CPU, or on an EtherCAT coupler for remote I/O drops. Each of the 16 inputs reads a 24 VDC digital signal and reports it to the controller over the NX bus. The '53' in the model code identifies the unit as 16-point NPN at standard speed; the '42' identifies the screwless push-in terminal block. So this is the high-density 16-point variant. For 8-point density in the same series, look at the NX-ID4342 (NPN, 8 points) or NX-ID4442 (PNP, 8 points). For PNP 16-point, the sibling is the NX-ID5442 — same footprint, opposite polarity. The input refresh rate is selectable: Synchronous I/O refreshing locks the input scan to the EtherCAT cycle (deterministic, used for high-speed interlocks) at 20 μs, or Free-Run refreshing scans at the unit's own pace (up to 400 μs) for general-purpose inputs. For most machine safety circuits, use Synchronous mode; for non-critical status inputs, Free-Run is fine and frees EtherCAT bandwidth. The 12 mm width and screwless push-in terminals make the NX-ID5342 a strong choice for retrofit projects where panel space is limited. The push-in terminals accept solid wire, ferruled stranded wire, or standard stranded with a push-in release tool (the same XW4Z-001B tool used elsewhere in the NX family). No screw torque to manage, no loosening from thermal cycling. On the wiring side, the common terminal (pin 17 / 'C' row) connects to the 24 VDC common — the polarity depends on whether you're using NPN (sinking) sensors that pull to 0V, or sourcing PNP sensors. For PNP inputs, use the NX-ID5442 instead. The rated input voltage is 24 VDC ±10%; inputs are optically isolated from the NX bus. Common pitfall: do not mix the NX-ID5342 with the older CJ1W-ID211 in the same I/O table. They are not pin-compatible and will not be recognised as a single I/O group. Migration projects should swap CJ1W-ID211s for NX-ID5342s on the new rack and wire them to the NX CPU, leaving the legacy CJ1 I/O in place until the full migration window. Compared to the smaller NX-ID4342 (8 points), the NX-ID5342 doubles the I/O density for the same 12 mm width — a 30% space saving on the panel. Compared to the NX-ID6342 (MIL connector, 16 points), the NX-ID5342 is the standard terminal version; the MIL connector version is for high-density cable harnesses.

Key Features

  • 8-point digital input capacity for compact I/O sections
  • NPN 24VDC input compatibility for industrial sensors
  • Designed for NX/EtherCAT modular architectures
  • Suitable for interlock and sensor signal collection
  • Supports clear channel-level diagnostics and maintenance
  • Useful for incremental expansion in existing NX systems
  • SKU: NX-ID5342
  • Series: NX
  • Voltage: 24VDC
  • I/O: 8 I/O

Best-Fit Applications

  • Reading 16 limit switches on a high-speed packaging line via Synchronous I/O mode for sub-millisecond response
  • Collecting 16 pushbutton inputs on an operator panel in an OEM machine with Free-Run mode to save EtherCAT bandwidth
  • Interfacing 16 NPN proximity sensors to an NX102 PLC in a discrete manufacturing cell
  • Replacing legacy CJ1W-ID211 16-point input cards in a retrofit project to modernise I/O

Buying Checklist

  • 16-point density in 12 mm width — 30% space saving vs 8-point NX-ID4342
  • Screwless push-in terminals eliminate screw torque management and thermal loosening
  • Selectable Synchronous or Free-Run refresh mode for either deterministic or bandwidth-friendly operation
  • Sits natively on NX I/O bus — no EtherCAT slave unit needed for direct connection to NX CPU
  • Sister NX-ID5442 shares the same footprint, allowing mixed polarity on the same rack

Technical Specifications

Model NX-ID5342
Series NX
Type Digital Input Unit
Input Points 8 points
Input Voltage 24VDC
Input Type NPN (sinking)
Response Time 0.1ms standard
Connection Push-in terminals
Current Consumption 30mA at 5VDC
Mounting DIN rail
Operating Temperature 0 to +55°C

FAQ for NX-ID5342

What's the difference between NX-ID5342 and NX-ID5442?
NX-ID5342 is NPN (sinking input), NX-ID5442 is PNP (sourcing input). The physical size, terminal layout, and EtherCAT interface are identical — only the input polarity differs. Use NX-ID5342 with NPN sensors (most common in Asia and US); use NX-ID5442 with PNP sensors (more common in EU).
How fast is the NX-ID5342 input response?
Standard speed: 20 μs in Synchronous I/O mode (locked to EtherCAT cycle), up to 400 μs in Free-Run mode. For high-speed interlock applications requiring faster than 100 μs, use Synchronous mode. For typical limit switch and pushbutton inputs, Free-Run mode is plenty fast and saves EtherCAT bandwidth.
Can I mix NX-ID5342 with CJ1W I/O on the same CPU?
No, not directly. NX I/O and CJ1 I/O are different bus architectures. To bridge them, use a CJ1W-ECT21 EtherCAT slave unit on the CJ1 rack, then add NX-ID5342 units to the EtherCAT network. The CPU can read CJ1 I/O and NX I/O in the same scan, but they are physically separate I/O drops.
What's the difference between NX-ID5342 and NX-ID6342?
Both are 16-point NPN at 24 VDC. NX-ID5342 has screwless push-in terminals (standard wiring); NX-ID6342 has a MIL connector for high-density cable harnesses. For retrofit and most OEM machines, NX-ID5342 with push-in terminals is the right pick. For new builds with pre-made cable harnesses, NX-ID6342 saves wiring time.

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