4-13
Section 4 Software Interface
4-1 Analog Input Module
<Example 2 of gain/offset adjustment>
<Offset/gain adjustment procedure>
Offset is adjusted first.
1) Set ON bit 7 and bit 6 of the parameter type setting register to activate offset/gain adjustment mode. (Make sure that
module status is “30001”.)
2) Set ON the bit for the channel to be adjusted (the corresponding bit of bits 8 to 15 of the parameter type setting register).
(The “SETTING” LED of the module blinks.)
3) Apply a voltage (or a current) that corresponds to the offset value to the terminal of the channel that is to be adjusted.
4) Set ON bit 0 (zero) of offset address +10 of the parameter type setting register to write the offset adjustment value in the
module internal EEPROM. When bit 0 (zero) of offset address +2 is set ON, the writing of EEPROM is completed. After
confirming this, set OFF bit 0 (zero) of the parameter setting data register.
5) Then set bit 0 (zero) OFF and bit 15 ON of offset address +10 of the parameter type setting register. (Gain adjustment)
6) Apply a voltage (or a current) that corresponds to the gain value to the terminal.
7) Set ON bit 0 (zero) of offset address +10 of the parameter type setting register to write the gain adjustment value in the
module internal EEPROM. Confirm the completion of writing in the same way as explained for offset adjustment.
8) Set OFF all the bits of the parameter type setting register, and clear all the bits of the parameter setting data register to
zero. This completes the operation for adjustment.
[Reference]
For concrete operating method with the SX Control Utility of D300win, refer to “Appendix 1 Offset/Gain Adjustment <D300win>”.
For concrete operating method with SX-Programmer Standard, refer to “Appendix 2 Offset/Gain Adjustment <SX-Programmer
Standard>”.
Analog input voltage (V)
Digital output value
(INT type)
8200
8000
Practicable digital
output range
-8000 (0)
-8200 (-125)
-10.25 -10
10 10.25
Gain value
Offset value
0
Offset and gain values for the range of -10 to 10 V.
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