HMIST6400

The Schneider Electric HMIST6400, also cataloged as the HMIST6400 touch panel screen, provides direct operator interface functions through a 7 inch resistive display, 24 VDC power input, Ethernet, RS-232C, RS-485, and USB communication interfaces within the Harmony ST6 platform.

Hardware Specifications

Parameter	Specification
Model	HMIST6400
Brand	Schneider Electric
Product Series	Harmony ST6
Product Type	Touch Panel Screen
Processor	ARM Cortex-A8, 800 MHz
Display	7 inch color TFT LCD
Resolution	800 x 480 pixels WVGA
Display Colors	16 million
Touch Technology	Single-touch analog resistive
Device Memory	1 GB
User Data Memory	128 MB
Backup Memory	512 KB
Application Pages	200
Ethernet	2 x 10/100BASE
COM1	RS-232C, 2400 to 115200 bps, 9-pin female SUB-D
COM2	RS-485, 2400 to 115200 bps, RJ45
USB	1 x USB 2.0 Type A, 1 x USB 2.0 Micro-B
Supported Protocols	Modbus, Uni-TE, third-party protocols
Supply Voltage	24 VDC +/- 20%
Power Consumption	9 W
Inrush Current	30 A
Operating Temp	0 to 50 deg C
Storage Temp	-20 to 60 deg C
Relative Humidity	10 to 90% RH, non-condensing
Operating Altitude	Up to 2000 m
Dimensions	208 x 153 x 45 mm
Cut-out Dimensions	190 x 135 mm
Weight	0.8 kg
Front Protection	IP65, IEC 61131-2
Rear Protection	IP20, IEC 61131-2
Front Material	Aluminum
Enclosure Material	PC
Mounting	4 screws, panel thickness 1.6 to 5 mm
Country of Origin	ID

Industrial Control and Communication Interfaces

The HMIST6400 provides two Ethernet ports with 10/100BASE communication and two serial interfaces. COM1 uses RS-232C through a 9-pin female SUB-D connector, while COM2 uses RS-485 through an RJ45 connector. Supported downloadable protocols include Modbus, Uni-TE, and third-party protocols.

The communication interfaces provide separate physical paths for connection to control equipment and external devices. Cable routing should keep communication wiring separated from high-current switching and power conductors to reduce conducted and radiated interference.

The 24 VDC supply accepts a +/- 20% tolerance and has a specified 30 A inrush current. The 9 W operating consumption represents the panel power load under the stated operating conditions.

Frequently Asked Questions

Q: What supply voltage does the HMIST6400 require?
A: The specified external supply is 24 VDC with a +/- 20% tolerance. The listed power consumption is 9 W, with a specified 30 A inrush current.

Q: Which physical communication interfaces are provided?
A: The panel provides two 10/100BASE Ethernet ports, one RS-232C serial interface, one RS-485 serial interface, one USB 2.0 Type A port, and one USB 2.0 Micro-B port.

Q: Is hot-swapping specified for the HMIST6400?
A: No hot-swap function is specified in the supplied technical data. Power should therefore be isolated before physical replacement or wiring work.

Field Installation Guidelines

Mount the HMIST6400 through a 190 x 135 mm panel cut-out using four mounting screws. The specified panel thickness is 1.6 to 5 mm. Ensure that the front mounting surface provides the required sealing condition for the specified front IP protection.

Connect the external 24 VDC supply with correct polarity and provide appropriate overcurrent protection. Account for the specified 30 A inrush current when selecting the upstream power supply and protection device.

Route Ethernet and serial communication cables separately from motor, contactor, switching, and other high-current conductors. Where shielded communication cables are used, terminate shields according to the control panel grounding scheme and avoid creating unintended ground-current paths.

Allow sufficient clearance around the rear of the panel for the power, Ethernet, serial, and USB connections. Do not apply mechanical stress to the connectors or communication cables after installation.

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