User`s manual

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MELSEC-Q
10 COMPENSATION OPERATION INSTRUCTIONS
Control data
(1) Data specified in S.TPC instruction
Specified position Symbol Name Recommended range
*1
Unit Data format
Standard
value
Store
S1
+0
+1
E1
Differential
pressure
-999999 to 999999
Real
number
U
+2
+3
E2
Measurement
temperature
-999999 to 999999
Real
number
U
+4
+5
E3
Measured
pressure
-999999 to 999999
Real
number
U
e
e1 E2 use flag
Input data
+6
e2 E3 use flag
b15 b12 b8 b4 b0
e
1
0: Unused
1: Used
e
2
BIN
16Bit
U
Block
memory
D1
+0
+1
BW Output value (-999999 to 999999)
Real
number
S
S2
+0
+1
TEMP
Design
temperatureT’
(Engineering
value)
-999999 to 999999
Real
number
0.0 U
+2
+3
B1
Bias
(Temperature)
-999999 to 999999
Real
number
273.15 U
+4
+5
PRES
Design
pressureP’
(Engineering
value)
-999999 to 999999
Real
number
0.0 U
Operation
constant
+6
+7
B2
Bias
(Pressure)
-999999 to 999999
Real
number
10332.0 U
*1: The data of the item(s) where the values within the recommended range are given in the parentheses are stored by the system.
Users cannot set the data.
Processing contents
(1) The S.TPC instruction calculates the temperature/pressure compensation value with the
following expression.
BW E1 A1 A2
(2) A1 and A2 use the values calculated with the following expressions.
Input
E2 E3
A1 A2
Used Used
B1E2
B1
T'
B2P'
B2
E3
Not used Used 1.0
B2P'
B2
E3
Used Not used
B1E2
B1
T'
1.0
ERROR
• When an operation error occurs Error code: 4100