Ny-Series Instructions Reference Manual (W560 - Omron NY532-5400 Reference Manual

2 Instruction Descriptions
Notation Example
The following notation example sets upper deviation set value H to 50°C, lower deviation set value L to
40°C, and hysteresis EPS to 10°C.
LD
A
LREAL#50
LREAL#40
LREAL#10
ST
LimitAlarmDv_LREAL_instance(A,PV,LREAL#50,SP,LREAL#40,LREAL#10,Alarm,H_Alarm,L_Alarm,Error0);
H = LREAL#50
L = LREAL#40
Enable = A
QH = H_Alarm
QL = L_Alarm
Q = Alarm
Additional Information
• Use the LimitAlarmDv_REAL instruction to reduce the instruction execution time.
• You can set EPS to less than H + L. If you do so, both QH and QL can be TRUE at the same time.
Reference value X
Upper deviation alarm QH
Lower deviation alarm QL
2-750
LimitAlarmDv_LREAL_Instance
LimitAlarmDv_LREAL
Enable
X
PV
H
Y
SP
L
EPS
X = PV
(°C)
Y = SP
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
FALSE
Upper deviation set value H
Input value X
Lower deviation set value L
TRUE
FALSE
TRUE
FALSE
Alarm
Q
H_Alarm
QH
L_Alarm
QL
Error0
Error
Hysteresis EPS
for the lower deviation alarm

NY-series Instructions Reference Manual (W560)

EPS = LREAL#10
Time
Hysteresis EPS
for the upper deviation alarm
Time