5.4 LCD part for HMI function keys control moduleGUID-EECAE7FA-7078-472C-A429-F7607DB884EB v25.4.1 IdentificationGUID-E6611022-5EA3-420D-ADCD-9D1E7604EFEB v1Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberLCD part for HMI Function KeysControl moduleFNKEYMD1 -FNKEYMD5- -5.4.2 Function blockGUID-A803A728-5CFC-4606-98E4-793E873B99D4 v3FNKEYMD1^LEDCTL1 ^FKEYOUT1IEC09000327 V1 EN-USFigure 6: FNKEYMD1 function blockOnly the function block for the first button is shown above. There is a similar block forevery function key button.5.4.3 SignalsPID-1657-INPUTSIGNALS v18Table 40:FNKEYMD1 Input signalsName Type Default DescriptionLEDCTL1 BOOLEAN 0 LED control input for function keyPID-1657-OUTPUTSIGNALS v19Table 41:FNKEYMD1 Output signalsName Type DescriptionFKEYOUT1 BOOLEAN Output controlled by function key1MRK 511 408-UUS A Section 5Local Human-Machine-Interface LHMIPhasor measurement unit RES670 2.2 ANSI 79Technical manual