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CHAPTER 6 BUFFER MEMORY
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(13)Two-point calibration method setting (Un\G41)
Select automatic setting or user setting to configure the settings for two-point calibration values.
When two-point calibration processing is performed with automatic setting selected, optimum calibration values
are stored automatically.
When performing two-point calibration processing with user setting selected, set a value using a sequence
program.
b15 b14 b13 b12 b11 b10 b9 b8
0
0
0
0
0
0
0
0
b7 b6 b5 b4 b3
b2 b1 b0
0
0
0
0
0
0
Data for b1 to b15 are fixed to "0".
0
0
0: Automatic setting
1: User setting
The buffer memory addresses for setting Two-point calibration method setting (Un\G41) are as follows.
• Instrumentation amplifier gain setting (Un\G80)
• A/D converter gain setting (Un\G81)
• Tare zero offset output value (Un\G82, Un\G83)
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• Two-point zero calibration value (Un\G84, Un\G85)*1
• Two-point span calibration value (Un\G86, Un\G87)*1
*1
Direct setting is also enabled in user setting mode.
(a) Default
Automatic setting (0) is set by default.
● The conditions for setting values are complicated, so automatic setting is normally useful rather than user setting.
(14)Two-point calibration setting (Un\G42)
This setting is used to specify whether to enable or disable two-point calibration.
b15 b14 b13 b12 b11 b10 b9 b8
0
0
0
0
0
0
0
0
b7 b6 b5 b4 b3
b2 b1 b0
0
0
0
0
Data for b2 to b15 are fixed to "0".
0
0
0
0
0: Two-point zero calibration disable
1: Two-point zero calibration enable
0: Two-point span calibration disable
1: Two-point span calibration enable
(a) Default
Two-point zero calibration disable (0), and Two-point span calibration disable (0) are set by default.
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6.2 Setting Data Details
● The following two-point calibration values are stored in non-volatile memory (FeRAM) so that the data will not be erased
when the power is cut off.
• Instrumentation amplifier gain setting (Un\G80)
• A/D converter gain setting (Un\G81)
• Tare zero offset output value (Un\G82, Un\G83)
• Two-point zero calibration value (Un\G84, Un\G85)
• Two-point span calibration value (Un\G86, Un\G87)