OVERVIEW

Official designation: Omron NT31-ST121B-EV1 (NT31 Series, Touch Panel HMI)

Role/Application: This operator interface is a compact human machine interface with a 5.7 inch monochrome STN LCD for machine monitoring and control via Host Link/NT Link communications.

KEY SPECS SUMMARY

Display Size: 5.7 inch diagonal

Resolution: 320 x 240 dots (QVGA)

Power Input: 24 VDC (20.4 to 26.4 VDC)

Power Consumption: 15 W max

Interfaces / Ports: RS-232C, RS-422A, Printer Port

Indicators: Refer to the latest manufacturer manual.

Operating Temp: 0 to 50 degrees C

Platform / Compatibility: Touch screen, Panel mountable

Limit: Front panel equivalent to IP65 oil-proof type

Memory: 1 MB Flash EPROM for screen data

Lifecycle: Discontinued by manufacturer

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What is the minimum guaranteed backlight service life of the NT31-ST121B-EV1 HMI?

A: The typical minimum service life for the backlight is 50,000 hours.

Wiring & Installation:

Q: What is the maximum recommended weight of the NT31-ST121B-EV1 unit?

A: The weight of the unit is 0.75 kg maximum for installation purposes.

Troubleshooting & Compatibility:

Q: Which Omron PLC communication protocols does the NT31-ST121B-EV1 support?

A: Supported protocols include Host Link and NT Link, for both one-to-one and one-to-N connections.

Replacement & Upgrades:

Q: What is the current recommended replacement series for the discontinued NT31 models?

A: The Omron NS5 series is the commonly recommended modern alternative to the NT31 programmable terminal.