6AV6643-0DB01-1AX5 Siemens SIMATIC HMI Multi Panel MP277 8 Membrane Keyboard.
 
The MP277-8 6AV6643-0DB01-1AX5 converter is required for the connection of controllers of other manufacturers. Connect the RS 422 to RS 232 converter to the RS 422 / RS 485 interface. The converter converts the input signals to RS-232 signals.
 
Do not write on the MP277-8 6AV6643-0DB01-1AX5 keyboard to label the function keys. Any printable and writable foil can be used as labeling strip. The permitted thickness of the labeling strip is 0.13 mm. Paper labeling strips are inappropriate. You can use transparent foil, the keyboard membrane of the HMI device is printed on the reverse side. Use transparent foil so that the LEDs of the function keys can be seen.
 
Mekatronix supply 6AV6643-0DB01-1AX5 Siemens MP 277 8 Membrane Keypad. All of them with Mekatronix 365 days warranty and support.
 
If the MP277-8 6AV6643-0DB01-1AX5 connection cable of the HMI device is disconnected from the connection box, the LEDs F2, F4, F6, F8 and F10 indicate the charge status of the bridging battery. The MP277-8 6AV6643-0DB01-1AX5 LED for function key F1 also lights up for max. 9.5 minutes. This duration applies to a 100% charge status. The duration reduces as the charge reduces. The LED F1 flashes for 30 seconds. The MP277-8 6AV6643-0DB01-1AX5 HMI device then switches off. Runtime is terminated.