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Description
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(Original Document)
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Description
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(Original Document)
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Name in LL984 Editor
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Function Block Name
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|---|---|
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name of legacy 984 instruction
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name in other tools and editors like:
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Variable
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Meaning
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|---|---|
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YP
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P component (only if input status bit 9=1)
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YI
|
I component (only if input status bit 10=1)
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YD
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D component (only if input status bit 11=1)
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Input Pin
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Name
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Data Type
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Address Range
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Meaning
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|---|---|---|---|---|
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Top
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ENABLE
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–
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ON = enables process control function
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Node
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Node Type
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Name
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Data Type
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Address Range
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Meaning
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|---|---|---|---|---|---|
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Middle
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IN/OUT
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PAR
|
ARRAY[1..64] OF UINT
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%MW
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see Parameter PAR below
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Bottom
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IN
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LEN
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UINT
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64
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length of parameter block (can not be changed)
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Output Pin
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Name
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Data Type
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Address Range
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Meaning
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|---|---|---|---|---|
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Top
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OUT
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BOOL
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–
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ON = operation successful
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Bottom
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ERR
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BOOL
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–
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ON = operation not successful
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|
-
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Word
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Content
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Format
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|---|---|---|---|
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General Parameters
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1, 2
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live input, x
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REAL (Floating Point)
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3
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output status, modes
Output Status, Word 1
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WORD
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4
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output status, previous modes
Output Status, Word 2
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WORD
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5
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reserved
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WORD
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6
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input status (standard input bits, manual, halt, reverse, direct)
Input Status
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WORD
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Input Parameters
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7, 8
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proportional rate, KP
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REAL (Floating Point)
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9, 10
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reset time, TI
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REAL (Floating Point)
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11, 12
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derivative action time, TD
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REAL (Floating Point)
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13, 14
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delay time constant, TD1
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REAL (Floating Point)
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15, 16
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gain reduction zone, GRZ
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REAL (Floating Point)
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17, 18
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gain reduction in GRZ, KGRZ (0...1.0)
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REAL (Floating Point)
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19, 20
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limit rise of manual set point value
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REAL (Floating Point)
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21, 22
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limit rise of manual output
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REAL (Floating Point)
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23, 24
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high limit on output Y
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REAL (Floating Point)
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25, 26
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low limit on output Y
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REAL (Floating Point)
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27, 28
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expansion for anti-reset wind-up limits
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REAL (Floating Point)
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Inputs
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29, 30
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external set point for cascade
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REAL (Floating Point)
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31, 32
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manual set point
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REAL (Floating Point)
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33, 34
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manual output Y
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REAL (Floating Point)
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35, 36
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reset for output Y
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REAL (Floating Point)
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37, 38
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bias
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REAL (Floating Point)
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Outputs
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39, 40
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bumpless transfer word, BT
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REAL (Floating Point)
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41, 42
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calculated control difference (calculated error term), XD
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REAL (Floating Point)
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43
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previous operating mode (not used)
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UINT
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44, 45
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delta T (in ms) since last solve
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UDINT
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46, 47
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previous system deviation, XD_1
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REAL (Floating Point)
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48, 49
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previous input, X_1
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REAL (Floating Point)
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50, 51
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integral part of output YI
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REAL (Floating Point)
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52, 53
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differential part of output YD
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REAL (Floating Point)
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54, 55
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set point, SP
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REAL (Floating Point)
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56, 57
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proportional part of output YP
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REAL (Floating Point)
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58
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previous operating status (not used)
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UINT
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Timing Information
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59, 60
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10 ms clock at time n
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UDINT
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61, 62
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solution interval (in ms) (not used)
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UDINT
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Output
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63, 64
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manipulated output variable, Y
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REAL (Floating Point)
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Control Expert-IEC bits
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Function
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|---|---|
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0...7
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standard output bits (flags)
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8
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1 = reset mode selected
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9
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1 = manual mode selected
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10
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1 = halt mode selected
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11
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1 = auto mode selected
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12
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1 = cascade mode selected
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13
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1 = high limit exceeded
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14
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1 = low limit exceeded
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15
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error detected
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Control Expert-IEC bits
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Function
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|||||
|---|---|---|---|---|---|---|
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0...4
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detected error conditions:
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|||||
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Bit 4
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Bit 3
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Bit 2
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Bit 1
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Bit 0
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Meaning
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1
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0
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1
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0
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0
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negative gain, Kp
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1
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0
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1
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1
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1
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negative deriviate time constant, TD
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1
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0
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1
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1
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0
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negative integral time constant, TI
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1
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1
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0
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0
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0
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negative delay time constant, T1
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1
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1
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0
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0
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1
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negative nonsensitive zone, UZ
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1
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1
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0
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1
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0
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negative amplification reduction in UZ, KUZ
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1
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0
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1
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0
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1
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high/low limit error detected (low > high)
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5...7
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not used
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|||||
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8
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1 = previous auto mode selected (not supported in Control Expert)
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|||||
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9
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1 = previous P mode selected (not supported in Control Expert)
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10
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1 = previous I mode selected (not supported in Control Expert)
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11
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1 = previous D mode selected (not supported in Control Expert)
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12...15
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not used
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|||||
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Control Expert-IEC bits
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Function
|
|---|---|
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0
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1 = reverse action for loop output
0 = direct action for loop output
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1
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1 = manual Y tracks Y
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2
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1 = disable bumpless transfer
0 = bumpless transfer
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3
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1 = anti--reset wind-up on YI only
0 = normal anti--reset wind-up
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4
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1 = solve derivative algorithm based on x
0 = solve derivative algorithm based on xd
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5
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1 = solve derivative algorithm
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6
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1 = solve integral algorithm
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7
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1 = solve proportional algorithm
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8
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1 = cascade mode
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9
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1 = halt mode
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10
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1 = manual mode
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11
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1 = reset mode
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12...15
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standard input bits (flags)
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