[Instruction] Contents

Advanced Function InstructionFUN 95RAMPRAMP FUNCTION FOR D/A OUTPUTFUN 95RAMPRamp controlPause controlUp/Down outputENPAUU/DLadder symbol95.RAMPTn :ERRPV :S :LASLS U :D : ASUTn : Timer for ramp functionPV : Preset value of ramp timer (the unit is 0.01 second)or the increment value of every 0.01 secondS L : Lower limit value(ramp floor value).S U : Upper limit value(ramp ceiling value).D : Register storing current ramping value.D+1 : Working registerS U, S L could be positive or negative value when incorporatewith AO module application.OperandRangeWX WY WM WS TMR CTR HR IR OR SR ROR DR KWX0∣WX240WY0∣WY240WM0∣WM1896WS0∣WS984T0∣T255C0∣C255R0∣R3839R3840∣R3903R3904∣R3967R3968∣R4167R5000∣R8071D0∣D409516-bit+/- numberTn ○PV ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○S L ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○S U ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○D ○ ○ ○ ○ ○ ○ ○ ○ ○* ○Description• Tn must be a 0.01 sec time base timer and never used in other part of program.• PV is the preset value of ramp timer. Its unit is 10ms (0.01 second).• When input control “EN↑” changes from 0→1, it first reset the timer Tn to 0.When “U/D”=1 it will load the value of SL to register D. And when M1974 = 0 it will be increased by S U−S L /PV every 0.01 sec or when M1974 = 1 it will increase by PV every 0.01 sec. When the D value reaches theS U value the output “ASU” =1.When “U/D”=0 it will load the value of S U to register D. When M1974 = 0 it will be decreased by S U−S L / PVevery 0.01 sec or when M1974 = 1 it will be decreased by PV every 0.01 sec. When the D value reaches theS L value the output “ASL” =1.• The ramping direction(U/D) is determined at the time when input control “EN↑” changes from 0→1. After theoutput D start to ramp, the change of U/D is no effect.• If it is required to pause the ramping action, it must let the input control “PAU” = 1; when “PAU”=0, and theramping action is not completed, it will continue to complete the ramping action.• The value of S U must be larger than S L, otherwise the ramp function will not be performed, and the output“ERR” will set to 1.• This instruction use the register D to store the output ramping value; if the application use the D/A module tosend the speed command, then speed command can be derived from the RAMP function to get a moresmooth movement.• In addition to use register D to store the ramping value, this instruction also used the register D+1 to act asinternal working register; therefore the other part of program can not use the register D+1.7-81