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CHAPTER 3 SPECIFICATIONS
3
3.4 Buffer Memory Assignment
3.4.2 Details of the buffer memory
(77)CH Process value (PV) scaling lower limit value (Un\G726, Un\G742,
Un\G758, Un\G774)
CH Process value (PV) scaling upper limit value (Un\G727, Un\G743,
Un\G759, Un\G775)
Set the upper limit value/lower limit value of the temperature process value (PV) scaling function.
For details on the temperature process value (PV) scaling function, refer to the following.
Page 192, Section 4.11
(a) Setting range
The setting range is -32000 to 32000.
(b) Enablement of setting contents
Enable the setting contents by turning Setting change instruction (YnB) OFF ON OFF during the setting
mode (Setting/operation mode status (Xn1): OFF).
(c) Default value
The default values are set to 0 in all channels.
The setting where the lower limit value is not less than the upper limit value does not cause an error. The temperature
process value (PV) is scaled according to the formula of Page 192, Section 4.11 (2)
(78)CH Process value (PV) scaling value (Un\G728, Un\G744, Un\G760,
Un\G776)
When the temperature process value (PV) scaling function is enabled, the scaled temperature process value
(PV) is stored.
For details on the temperature process value (PV) scaling function, refer to the following.
Page 192, Section 4.11
(79)CH Derivative action selection (Un\G729, Un\G745, Un\G761, Un\G777)
Select the type of derivative action. Dynamic performance can be improved by selecting the suitable derivative
action for the fixed value action and the ramp action. For details on the derivative action selection function, refer
to the following.
Page 189, Section 4.8
(a) Setting range
• 0: Measured value derivation
• 1: Deviation derivation
(b) Enablement of setting contents
Enable the setting contents by turning Setting change instruction (YnB) OFF ON OFF during the setting
mode (Setting/operation mode status (Xn1): OFF).
(c) Default value
All channels are set to Measured value derivation (0).
Common
Common
Common
Common