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Omron ST161 NT20S Programmable Terminal

Omron ST161 NT20S Programmable Terminal

Item NO.: 3786114
Inquiry

Warranty: 1 year 


Condition : brand new in factory sealed box


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Detail

  • Product NameOmron ST161 NT20S Programmable Terminal
  • Item NO.3786114
  • Weight1.0000 kg = 2.2046 lb = 35.2740 oz
  • CategoryPLC
  • Brandothers
  • Creation Time2026-10-08
NT20S | MONOCHROME DISPLAY | LEGACY OPERATOR TERMINAL

Omron ST161 NT20S Programmable Terminal Variant

A legacy NT20S black-LCD variant identifier that must be completed with the full catalog prefix, case code and revision before replacement.

BrandOmron
ModelST161
Product TypeNT20S Programmable Terminal Variant Identifier
01

Overview

ST161 appears in Omron documentation as the display-variant element within NT20S-ST161□-EV3 programmable-terminal catalog numbers. The documented NT20S-ST161-EV3 form uses a black monochrome LCD and supports Host Link and NT Link communications.

Because ST161 alone is not the complete Omron catalog number, this page preserves the submitted identifier while making the ordering boundary explicit. Confirm NT20S prefix, black/ivory front code and EV3 revision from the physical nameplate.

02

Specs

Manufacturer Omron
Submitted Model ST161
Documented Product Family NT20S programmable terminal
Documented Catalog Pattern NT20S-ST161□-EV3
Display Variant Black monochrome LCD within the documented ST161 family
Display Area 5-inch class NT20S operator interface
Resolution 256 × 128 dots
Standard Communications Host Link and NT Link for the documented ST161-EV3 execution
Screen Memory Flash memory; no backup battery required for screen-data retention
Front Protection Manufacturer documentation describes IP65 front-panel protection when correctly installed
Serviceable Item Field-replaceable backlight unit
Ordering Boundary Complete prefix, front-color code and revision must be confirmed
03

Features

  • Provides a compact monochrome touchscreen interface for legacy PLC applications.
  • Supports direct Host Link and NT Link connectivity in the documented EV3 execution.
  • Stores screen data in flash memory rather than battery-backed screen RAM.
  • Uses a replaceable backlight to support field maintenance.
04

Applications

  • Replacement planning for a legacy NT20S-ST161-series operator terminal.
  • Recovery of an existing HMI application where the screen project and communications settings are available.
  • Migration assessment to a current HMI while retaining PLC address behavior and operator workflows.
05

Lifecycle

  • Photograph the complete rear label before ordering; ST161 alone is insufficient for final release.
  • Upload the screen project and record PLC model, cable pinout, Host Link/NT Link settings and node number.
  • Check panel cutout, front color and environmental sealing before choosing a replacement terminal.
  • Validate every screen, alarm, numeric entry and PLC write function after restoration or migration.
06

FAQ

Why is ST161 not enough by itself for a purchase order?

Omron uses ST161 inside longer NT20S catalog numbers, so the prefix, front-color character and EV3 revision must be taken from the label.

Which files should accompany an ST161 replacement enquiry?

Send the NT-series screen project, PLC program reference, communications settings, cable drawing and photographs of both terminal labels.

Can an NT20S-ST121 terminal automatically replace an ST161 display variant?

Do not assume interchangeability. Display technology, front color, communications execution and project compatibility must be checked against the complete codes.

What is the main migration risk for an ST161 installation?

A modern HMI can require address conversion, recreated screens, different cables and retesting of every operator write and alarm acknowledgement.

How should a restored ST161 terminal be accepted?

Verify project checksum, PLC communications, all navigation paths, setpoint permissions, alarm behavior, screen readability and front-panel sealing.

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