Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 1321

■Loop tag memory
The loop tag memory occupies 96 words from the specified start device.
Operand: (d2)
Position Symbol Name
+1 MODE Control mode
+3 ALM Alarm detection
+4 INH Disable alarm
detection
+12 MV Manipulated
+13 value
+14 SV Set value
+15
+16 DV Deviation
+17
+18 HS0 Hysteresis
+19
+22 RH Engineering
+23 value upper limit
+24 RL Engineering
+25 value lower limit
+46 CT Control cycle
+47
■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)
Device Symbol Name
+96  Control cycle
counter
initialization
completion flag
+97 Control cycle
counter (The
value is rounded
off to the nearest
whole number.)
Recommended range
0 to FFFFH
...
b15 b10 b9 b8 b7 b6 b5 b4
0 to FFFFH
...
b15b14
SPA
0: Loop RUN
1: Loop STOP
0 to FFFFH
... ...
b15 b13
TRKF
0: Tracking not set
1: Tracking set
-10 to 110 [%]
RL to RH
-110 to 110 [%]
0 to 999999
-999999 to 999999
-999999 to 999999
0 to 999999 [s]
Set a value within the following range.
CT
<=32767
© T
Recommended range

Data type
16-bit unsigned
binary
b3 b2 b1 b0
16-bit unsigned
binary
b0
16-bit unsigned
binary
b0
Single-precision
real number
Single-precision
real number
Single-precision
real number
Single-precision
real number
Single-precision
real number
Single-precision
real number
Single-precision
real number
Data type

11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
Standard Set by
value
8H User/
system
11
4000H User/
system
4000H User/
system
0.0 User/
system
0.0 User
0.0 System
0.0 User
100.0 User
0.0 User
1.0 User
Standard Set by
value
 System
1319