Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
■
Loop tag memory
The loop tag memory occupies 96 words from the specified start device.
■ Loop tag past value memory
The system uses this area as a work area.
To start the control from the initial status, clear data by using a sequence program.
The loop tag past value memory occupies 32 words after the loop tag memory.
Operand: (d2)
Position Symbol Name Recommended range Data type Standard
value Set by
+1 MODE Control mode 0 to FFFFH 16-bit unsigned
binary 8H User/
system
+3 ALM Alarm detection 0 to FFFFH
SPA
0: Loop RUN
1: Loop STOP
16-bit unsigned
binary 4000H User/
system
+14
+15 SPR Set value -999999 to 999999 Single-precision
real number 0.0 User
+16
+17 BIAS Bias -999999 to 999999 [%] Single-precision
real number 0.0 User
+46
+47 CT Control cycle 0 to 999999 [s]
Set a value within the following range. Single-precision
real number 1.0 User
+50
+51 DR Variation rate
limit value 0 to 999999 Single-precision
real number 100.0 User
+52
+53 RMAX Ratio upper limit
value -999999 to 999999 Single-precision
real number 100.0 User
+54
+55 RMIN Ratio lower limit
value -999999 to 999999 Single-precision
real number 0.0 User
+56
+57 R
n
Ratio current
value -999999 to 999999 Single-precision
real number 0.0 System
Operand: (d2)
Position Symbol Name Recommended range Data type Standard
value Set by
+96  Control cycle
counter
initialization
completion flag    System
+97 Control cycle
counter (The
value is rounded
off to the nearest
whole number.)
+98
+99 R
n-1
Last value
b15 b9 b10 b1 b2 b3 b4 b5 b6 b7 b8 b0
CMV CSV LCM LCA LCC MAN AUT CAS CMB CAB CCB
...
b15b14 b0
...
SPA
©
T
CT
<=32767