vi    HC900 Hybrid Control Designer Function Block Reference Guide  Revision 11 
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HCMPR Comparison Calculation Function Block...................................................... H120 
HDC Device Control Function Block.......................................................................... H121 
HDCMP Deviation Compare Function Block ............................................................. H126 
HDDEC Digital Decoder Function Block.................................................................... H129 
HDENC Digital Encoder Function Block.................................................................... H131 
HDEWP Function Block............................................................................................. H133 
HDI Function Block .................................................................................................... H136 
H8DI Function Block .................................................................................................. H139 
HDIV Function Block.................................................................................................. H142 
HDLAY Function Block .............................................................................................. H144 
HDO Function Block .................................................................................................. H146 
H8DO Function Block ................................................................................................ H149 
HDSW Digital Switch Function Block ........................................................................ H152 
HENTH Humidity and Enthalpy Function Block......................................................... H153 
HFGEN Function Generator Function Block ............................................................. H155 
HFI Frequency Input ..................................................................................................H159 
HFRCP Force Present Function Block ...................................................................... H163 
HFSS Four Selector Switch Function Block .............................................................. H164 
HFSYS Fast Logic Status Function Block ................................................................. H167 
HHLLM High Low Limiter Function Block .................................................................. H168 
HHMON High Monitor Function Block ....................................................................... H170 
HHOA Hand/Off/Auto Switch Function Block ............................................................ H172 
HHSEL High Selector Function Block ....................................................................... H177 
HLDLG Lead/Lag Function Block .............................................................................. H179 
HLMON Low Monitor Function Block ........................................................................ H182 
HLPSW Loop Switch Function Block......................................................................... H184 
HLSEL Low Selector Function Block......................................................................... H186 
HLTCH Latch Function Block .................................................................................... H187 
HMATH Function Block ............................................................................................. H189 
HMBR Modbus Read Function Block ........................................................................ H193 
HMBS Modbus Slave Function Block........................................................................ H197 
HMBW Modbus Write Function Block ....................................................................... H204 
HMDSW Mode Switch Function Block ...................................................................... H208 
HMDFL Mode Flag Function Block............................................................................ H210 
HMMA Min/Max/Avg Function Block ......................................................................... H212 
HMSF Mass Flow Calculation Function Block........................................................... H216 
HMUL Multiplier Function Block................................................................................. H219