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C2-9
IM 34M06H63-01E
1st Edition : July, 2003-00
C2.4
PV Range Setting (for two-input changeover
mode)
The PV range setting defines the range of the output process value in Two-input
Changeover mode, in cases where the two input signals have different input ranges. The
PV range setting cannot be changed in Single-input mode. For example, if input 1
(channel 1) has input range of 0-500
C (RL=0
C; RH=500
C) and input 2 (channel 2) has
input range of 300-1000
C (RL=300
C; RH=1000
C), you may set the PV range of
channel 2 to 0-1000
C (PRL=0
C; PRH=1000
C).
PV range
Input 2 range
Input 1 range
0
300
500
1000
RL1
PRL2
RH1
RH2
PRH
2
RL2
°C
In the figure, a number after a parameter symbol denotes a channel number. For example, RL2 means the input range
lower limit (RL) for channel 2.
Figure C2.3 Examples of PV Range Setting
Table C2.6 PV Range Parameters
Data Position Number
Symbol Description Unit
Data
Range
Default
Value
Attribute Stored
CH1 CH2 CH3 CH4
101 301 501 701 PVIN Input
process
value Industrial
unit
From -5.0% to 105.0% of the difference
between SH and SL
−
RO
−
102 302 502 702 PV Process
value
Industrial
unit
From -5.0% to 105.0% of the difference
between PRH and PRL
−
RO
−
351 751 PRH
PV
range
upper
limit
Industrial
unit
-30000 to 30000;
0 < PRH - PRL
30000.
Changeable only for even channels in
Two-input Changeover mode with a
maximum resolution of 14 bits (16383).
SH RW
352
752
PRL
PV range lower
limit
Industrial
unit
SL RW
353 753 PDP
PV
range
decimal
point position
None
0 to 4
Changeable only for even channels in
Two-input Changeover mode. Always
the same as SDP.
SDP RW
For details on how to switch between two inputs, see Section C2.11, "Two Input
Changeover."
CAUTION
,
PRH and PRL (PV range) are set by default to RH and RL (input range) of the even
channel (2 or 4) for temperature input, or SH and SL (scaling range) of the even channel
for DC voltage input. Redefine the PRH and PRL values as required.
Содержание FA-M3 VITESSE F3CX04-0N
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