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Advanced Function <strong>Instruction</strong>FUN 70FORLadder symbolFORFUN 70FOR70.FORNN : Number of times of loop executionRangeWX WY WM WS TMR CTR HR IR OR SR ROR DR KOperandWX0∣WX240WY0∣WY240WM0∣WM1896WS0∣WS984T0∣T255C0∣C255R0∣R3839R3840∣R3903R3904∣R3967R3968∣R4167R5000∣R8071D0∣D4095N ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○1∣16383• This instruction has no input control, is connected directly to the power line, and cannot be in series withany conditions.• The programs within the FOR and NEXT instructions form a program loop (the start of the loop program isthe next instruction after FOR, and the last is the instruction before NEXT). When PLC executes the FORinstruction, it first records the N value after that instruction (loop execution number), then for N timessuccessively execution from start to last of the programs in the loop. Then it jumps out of the loop, andcontinues executes the instruction immediately after the NEXT instruction.• The loop can have a nested structure, i.e. the loop includes other loops, like an onion. 1 loop is called alevel, and there can be a maximum of 5 levels. The FOR and NEXT instructions must be used in pairs. Thefirst FOR instruction and the last NEXT instruction are the outermost (first) level of a nested loop. Thesecond FOR instruction and the second last NEXT instruction are the second level, the last FOR instructionand the first NEXT instruction form the loop's innermost level.70FOR 270FOR 370FOR 4717171NEXTNEXTNEXT12 3˙In the example in the diagram at left, loop will beexecuted 4 ×3 ×2 = 24 times, loop will beexecuted 3 ×2 = 6 times, and loop will beexecuted 2 times.˙If there is a FOR instruction and no corresponding NEXTinstruction, or the FOR and NEXT instructions in thenested loop have not been used in pairs, or the sequenceof FOR and NEXT has been misplaced, then a syntaxerror will be generated and this program may not beexecuted.˙In the loop, the JMP instruction may be used to jump outof the loop. However, care must be taken that once theloop has been entered (and executed to the FORinstruction), no matter how the program flow jumps, itmust be able to reach the NEXT instruction beforereaching the END instruction or the bottom of theprogram. Otherwise FBs-PLC will halt the operation andshow an error message.˙The effective range of N is 1~16383 times. Beyond thisrange FBs-PLC will treat it as 1. Care should be taken , ifthe amount of N is too large and the loop program is toobig, a WDT may occur.7-53
Advanced Function <strong>Instruction</strong>FUN 71NEXTLadder symbolLOOP ENDFUN 71NEXT71.NEXT• This instruction and the FOR instruction together form a program loop. The instruction itself has no inputcontrol, is connected directly to the power line, and cannot be in series with any conditions.• When PLC has not yet entered the loop (has not yet executed to the FOR instruction, or has executed butthen jumped out), but the NEXT instruction is reached, then PLC will not take any action, just as if thisinstruction did not exist.• For the usage of this instruction please refer to the explanations for the FOR instruction on the precedingpage.7-54
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Conventional Ladder DiagramPLC Ladd
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Input processing (Reading thestatus
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We must energize the coil of relay
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Network: Network is a circuit repre
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1.5 The De-Composition of a Network
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• When a single element or a seri
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MEMO
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2.2 Digital and Register Allocation
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Relay No. Function Description3. Pu
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Relay No. Function DescriptionM1965
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2.4 Special Registers DetailsRegist
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Register No. Function DescriptionR4
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Register No. Function DescriptionD4
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Instruction Operand Symbol Function
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FUNNo.NameOperandDerivativeInstruct
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FUNNo.NameOperandDerivativeinstruct
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• Ramp Function InstructionsFUNNo
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MEMO
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※For the relays marked with a ‘
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FUN7 is the UDCTR function. While r
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X0X1Node ANode BIncerseInversediffe
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All input controls of the function
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• The names and functions of the
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5.1.4 Functions Output (FO)The “F
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Indirect addressing program example
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5.3.2 The Coding of Numeric Numbers
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(2). 0.5 = (-1) 0 * 2 ( 01111110 )
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While all FBs-PLC numerical operati
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Basic Function InstructionT TIMER T
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Basic Function InstructionT TIMER T
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Basic Function InstructionCCOUNTER(
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Basic Function InstructionSET D PSy
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Basic Function InstructionRST D PSy
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Basic Function InstructionFUN 0MCSy
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Basic Function InstructionFUN 1MCES
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Basic Function InstructionFUN 2SKPS
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Basic Function InstructionFUN 4DIFU
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Basic Function InstructionFUN 6 D P
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Basic Function InstructionFUN 7 DUD
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Basic Function InstructionFUN 9 D P
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Basic Function InstructionFUN 11 D
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Advanced Function InstructionFUN22
Page 110 and 111: Advanced Function InstructionFUN 24
Page 118 and 119: Advanced Function InstructionFUN32A
Page 132 and 133: Advanced Function InstructionFUN50
Page 154 and 155: Advanced Function InstructionEND PR
Page 180 and 181: Advanced Function InstructionFUN89/
Page 190 and 191: Advanced Function InstructionTable
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Advanced Function InstructionFUN 13
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Advance Function InstructionFUN 208
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MEMO
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8.2 Basic Formation of Step Ladder
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. Single CycleM1924X0• When step
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●STP Sxxx : S20≦Sxxx≦S999(Dis
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【Description】: 1. When ON, the
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●STPEND :(Displayed in WinProladd
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Example 1WinProladderFP-07M1924STP
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Example 3WinProladderFP-07M1924STP
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WinProladderFP-07M1924STP S0X1X2X0S
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WinProladderM1924TO S0X1STP S0SET Y
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●Pedestrian Crossing Lights Contr
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8.6 Syntax Check Error Codes for St
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1.1 Profile112798716外徑 4ψ×4
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〝H〞 indicates hexadecimal↓
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1.5.2 FUN function description• F
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【Example】Assume definition as R
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• Locations and application of th
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1.7.2 The Information formats of me
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