Siemens 6FM1496-1AC20 Keyboard

This keyboard enables manual data entry for axis positioning and machine control. The Siemens 6FM1496-1AC20 connects directly to compatible display or positioning modules. It measures 232 mm in width and 75 mm in height. This unit weighs approximately 0.42 kg for panel mounting.

Technical Specifications Table

Parameter	Value
Product Model	Siemens 6FM1496-1AC20
Category	Keyboard / Operator Entry Device
Number of Keys	20 membrane keys
Key Type	Tactile membrane with metal dome
Key Labeling	Laser-etched, wear-resistant
Connection Type	1 x 20-pin flat ribbon cable
Cable Length	500 mm (fixed attached)
Dimensions (W x H x D)	232 mm x 75 mm x 25 mm
Weight	0.42 kg
Internal Components	1 x membrane matrix, 1 x encoder IC
Output Signal	Parallel BCD (Binary Coded Decimal)
Electrical Isolation	None (direct logic connection)
Energy Storage	None (passive input device)
Operating Voltage	5 V DC (supplied via ribbon cable)
Contact Rating	10 mA at 5 V DC

Internal Design and Keypad Matrix

This keyboard uses a 20-key membrane matrix with metal dome contacts. An encoder IC converts each key press into a unique BCD output code. The Siemens 6FM1496-1AC20 provides tactile feedback through the metal dome mechanism. Laser-etched labels resist fading from frequent operator use. The keyboard draws all operating power directly from the connected host module. Consequently, this device requires no separate power supply or batteries.

Installation and Compatibility Guide

First, mount this keyboard into a 232 mm wide cutout on your control panel. Next, connect the 20-pin ribbon cable to your display or positioning module. Then, secure the keyboard using four M3 screws through the mounting holes. The host module automatically detects key presses without additional configuration. Each key sends a 4-bit BCD value plus a strobe signal to the host. This keyboard works exclusively with Siemens 6FM1470 series display modules and 6FM1496 series positioning systems. Avoid exposing the membrane surface to sharp tools or solvents.