Omron NT631C-ST141-EV1 color programmable terminal

The official Omron Support Tool manual lists NT631C-ST141-EV1 as a supported NT631C programmable terminal model. The manual places NT631C-ST141-EV1 in the NT-series terminals that create and exchange screen data with PLCs through supported communication methods.

Documented system function and position

Rebuilt from individual evidence

The official Omron Support Tool manual lists NT631C-ST141-EV1 as a supported NT631C programmable terminal model.

The manual places NT631C-ST141-EV1 in the NT-series terminals that create and exchange screen data with PLCs through supported communication methods.

Sits in the operator panel between the operator and the connected PLC.

Unknown: installed screen project, exact display configuration, PLC protocol settings, unit condition, and current commercial availability are not established by the manual.

Exact reference
NT631C-ST141-EV1
Category
HMI / Display
Evidence checked
2026-09-12

System role

This section explains what the product does and where it acts in the surrounding system.

Function
Displays configured color HMI screens and sends operator input to the connected PLC.
System position
Sits in the operator panel between the operator and the connected PLC.
Upstream / inputs
Receives PLC status, data, and screen instructions through the configured serial link.
Downstream / outputs
Sends touch-switch actions and terminal data to the PLC.
Limitations
Unknown: installed screen project, exact display configuration, PLC protocol settings, unit condition, and current commercial availability are not established by the manual.

Evidence ledger

Facts, inferences, and unknowns are kept separate.

Facts

  • The official Omron Support Tool manual lists NT631C-ST141-EV1 as a supported NT631C programmable terminal model.

    Confidence: high

  • The manual places NT631C-ST141-EV1 in the NT-series terminals that create and exchange screen data with PLCs through supported communication methods.

    Confidence: high

Inferences

  • Inferred system position: Sits in the operator panel between the operator and the connected PLC.

    Confidence: medium

    Rationale: The documented product function and interfaces establish the adjacent system stages.

Unknowns

  • Unknown: installed screen project, exact display configuration, PLC protocol settings, unit condition, and current commercial availability are not established by the manual.

    Confidence: low

    Missing evidence: installed screen project, exact display configuration, PLC protocol settings, unit condition, and current commercial availability are not established by the manual.

System position diagram

A flow from Receives PLC status, data, and screen instructions through the configured serial link. through NT631C-ST141-EV1 to Sends touch-switch actions and terminal data to the PLC..

Reading limit: system position only, not a wiring or safety drawing.

System position inferred from the captured evidence: Sits in the operator panel between the operator and the connected PLC.

Enlarged system diagram

A flow from Receives PLC status, data, and screen instructions through the configured serial link. through NT631C-ST141-EV1 to Sends touch-switch actions and terminal data to the PLC..

System position inferred from the captured evidence: Sits in the operator panel between the operator and the connected PLC.

View Mermaid source
flowchart LR
  upstream["Receives PLC status, data, and screen instructions through the configured serial link."] -->|"documented input"| item["NT631C-ST141-EV1"]
  item -->|"documented output"| downstream["Sends touch-switch actions and terminal data to the PLC."]
View diagram labels
Nodes
Receives PLC status, data, and screen instructions through the configured serial link.; Omron NT631C-ST141-EV1 color programmable terminal; Sends touch-switch actions and terminal data to the PLC.
Edges
Documented upstream interface; Documented downstream interface

Next action

Use this reference only when the documented system and interface requirements match the installation.

Confirm the exact marking, interfaces, and target system configuration against the cited documentation before replacement or commissioning.

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