Schneider Electric HMISTO715 Harmony STO 4.3-inch Wide Touch Panel RS-232/485 RJ45 HMI Operator Panel

The Schneider Electric HMISTO715 is a Harmony STO touch panel screen with a 4.3-inch wide 480x272 colour display and an RS-232C/RS-485 serial port on RJ45, built for PLCs that use a serial link rather than Ethernet. It runs on EcoStruxure Operator Terminal Expert, operates from a 12-24 V DC supply, draws 7.5 W, and carries an IP65 front-panel rating.

Technical Specifications

Certifications & Standards

• UL
• C-Tick
• KCC
• CE
• cUL
• ATEX Zone 2/22
• UKCA
• ANSI/ISA 12.12.01
• CSA C22.2 No. 142
• UL 61010-2-201
• EN 61000-6-2
• CSA C22.2 No. 213
• EN 61000-6-4
• UL 61010-1
• EN 61131-2

Selection Notes

Choose the serial-only HMISTO715 over the Ethernet-equipped variant in the same range when the target controller only exposes an RS-232C or RS-485 port — both panels share the identical 4.3-inch 480x272 display, ARM926EJ-S processor, and 0.22 kg housing, so the interface type is the only functional difference. Its ATEX Zone 2/22 rating also lets it serve as the local operator screen in a Zone 2/22 hazardous-area cabinet, which the plain IP65 rating alone would not cover.