5. COMMUNICATION IDENTIFIERS
IMSRM04-E8
59
Identifier PB: PV bias
Identifier which defines data to forcibly change (increase or decrease in displayed value) the
measured value (PV).
The value set in the PV bias is added to the actual input value to correct the input value. The PV
bias is used to correct the individual variations in the sensors or when there is difference between the
measured values (PV) of other instruments.
Example: When the temperature is measured by two instruments.
When the measured values (PV) are as shown in the diagram :
Main unit = 198
°
C
Recorder = 200
°
C
If a PV bias correction value of +2
°
C is added to the measured
value the main unit, the displayed value become:
Displayed value = Measured value (PV) + PV bias =
198
°
C + 2
°
C = 200
°
C
In this instrument, for a span of 400
°
C, the PV bias should be set to:
PV bias = 0.5 % (400
°
C
×
0.5 % = 2
°
C)
Data range: -5.00 to +5.00 % of span
Polling example:
E
O
T
E
N
Q
A
C
K
S
T
X
0 1
0 .
0 0 ,
0 2
...
E
T
X
B
C
C
* Omit the operation panel address when the connection is made directly to control unit.
Selecting example:
E
O
T
S
T
X
0 1
0 .
0 0 ,
0 2
...
E
T
X
B
C
C
E
O
T
A
C
K
* Omit the operation panel address when the connection is made directly to control unit.
Identifier
Comma
Comma
Space
Space
Next to identifier
Data (6 digits)
Data (6 digits)
Channel
No.
Channel
No.
Channel
No.
Channel
No.
Main unit = 198
°
C
Recorder = 200
°
C
Identifier
Identifier
Operation
panel
address
*
Operation
panel
address
*
Unit
address
Unit
address
Host computer send
Host computer send
Host computer send
Host computer send
SR Mini SYSTEM send
SR Mini SYSTEM send
