11 PROCESS CONTROL INSTRUCTIONS
11.3 Control Operation Instructions
1281
11
Upper/lower limit alarm
S.PHPL
Checks whether the PV that has been output by the S.IN instruction exceeds the upper limit or underruns the lower limit.
■Execution condition
■Description, range, data type
■Applicable devices
■Input data
Ladder ST
ENO:=S_PHPL(EN,s1,s2,d1,d2);
FBD/LD
Instruction Execution condition
S.PHPL
Operand Description Range Data type
(s1) Input data start device Refer to "Input data". Single-precision real
number
(d1) Block memory start device Refer to "Block memory". Word
(s2) Empty string specification
(Specify "" in ladder. Specify '' in ST or FBD/LD.)
String
(d2) Loop tag memory start device Refer to "Loop tag memory". Word
EN Execution condition Bit
ENO Execution result Bit
Operand Bit Word Double word Indirect
specification
Constant Others
X, Y, M, L,
SM, F, B, SB,
FX, FY
J\ T, ST, C, D, W,
SD, SW, R, ZR,
RD
U\G, J\,
U3E\(H)G
Z LT, LST,
LC
LZ K, H E $
(s1)
(d1)
(s2)
(d2)
Operand: (s1)
Position Symbol Name Recommended range Data type Standard
value
Set by
+0
+1
E1 Input value -999999 to 999999 [%] Single-precision
real number
User
RnCPU
RnENCPU
RnSFCPU RnSFCPURnPCPURnPCPU
(Standard) (Safety)
(Redundant)
(Process)