Siemens 6FM1496-1BB20 Keyboard Panel

The Siemens 6FM1496-1BB20 provides alphanumeric data entry for industrial operator stations. This keyboard panel measures 280 mm in width and 140 mm in height. It has a depth of 40 mm, so it fits standard panel cutouts easily. The unit weighs 0.62 kg, making installation secure and straightforward.

Key Layout and Button Specifications

This keyboard panel features 58 membrane keys in a full QWERTY arrangement. The Siemens 6FM1496-1BB20 includes alphabetic keys, numeric keys, and punctuation symbols. It also provides dedicated cursor arrow keys for navigation tasks. Each key has a rated actuation force of 1.8 newtons for comfortable typing. The membrane construction protects against dust and liquid ingress effectively.

Internal Architecture and Component Layout

The panel contains two separate circuit boards inside its sealed plastic housing. One board handles key scanning and debouncing, while the other manages USB communication. The Siemens 6FM1496-1BB20 includes a 32-bit microcontroller for key encoding and buffering. A USB Type-B connector interfaces with the host HMI device directly. The module stores 47 µF of capacitance for power supply filtering only.

Electrical Specifications and Status Indicators

You can power this keyboard panel directly from the USB host connection. The Siemens 6FM1496-1BB20 draws 100 mA at 5V DC during normal operation. Therefore, total power consumption reaches 0.5 watts for the entire panel. Three LED indicators show Num Lock, Caps Lock, and Scroll Lock status clearly. The panel supports plug-and-play operation without any driver installation.

Environmental Tolerance and Mounting Details

You can mount this keyboard panel flush into a control panel door easily. The device operates reliably from 0°C to 50°C ambient temperature. It tolerates humidity levels up to 90 percent without any condensation issues. The Siemens 6FM1496-1BB20 has an IP54 rating on the front panel for splash resistance. The rear body carries an IP20 rating for internal cabinet protection.

Below is a complete summary of its technical specifications.

Parameter	Value
Dimensions (W x H x D)	280 mm x 140 mm x 40 mm
Weight	0.62 kg
Number of Keys	58
Key Layout	QWERTY full alphabetic
Key Type	Membrane
Actuation Force	1.8 N
Special Keys	Cursor arrows
Number of PC Boards	2
Microcontroller	32-bit
Interface Connector	USB Type-B
Internal Capacitance	47 µF
Operating Voltage	5V DC (USB bus power)
Current Draw	100 mA
Power Consumption	0.5 W
Status LEDs	3 (Num, Caps, Scroll Lock)
Front Panel Rating	IP54
Rear Body Rating	IP20
Operating Temperature	0°C to 50°C
Humidity Tolerance	90% non-condensing

The Siemens 6FM1496-1BB20 replaces older keyboard units in SIMATIC HMI workstations. You do not need any special adapters or additional configuration software. This panel also supports multilingual key caps for international applications. Consequently, it provides reliable text entry for industrial operator interfaces.