11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
1283
11
■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.
■Execution cycle (T)
Set the execution cycle (T) in SD816 and SD817 in single-precision real number.
+40
+41
HS Upper/lower
limit alarm
hysteresis
0 to 999999 [%] Single-precision
real number
0.0 User
+42
+43
CTIM Variation rate
alarm check
time
0 to 999999 [s]
Set a value within the following range.
Single-precision
real number
0.0 User
+44
+45
DPL Variation rate
alarm value
0 to 100 [%] Single-precision
real number
100.0 User
Operand: (d2)
Position Symbol Name Recommended range Data type Standard
value
Set by
+124 Variation rate
monitoring
counter
initialization
completion flag
System
+125 Variation rate
monitoring
counter
(rounded off to
the nearest
whole number)
+126
+127
E1
n-m
Operand: (d2)
Position Symbol Name Recommended range Data type Standard
value
Set by
©T
CTIM
<=32767