Mitsubishi Electric NZ2GF2B-60TCTT4 User Manual page 136

(a) How to execute sensor two-point correction
Follow the instructions below.
Setting start
Stop the operation.
Set Monitor (1) to CH□ Stop mode setting
(address: 118H, 148H, 178H, 1A8H).
Set Sensor two-point correction function (1H) to
Sensor correction function selection (address: 1E4H).
1
Enter a correction offset value.
Set a temperature process value (PV) to be input
to CH□ Sensor two-point correction offset value
(corrected value) (address: 285H, 289H, 28DH, 291H).
Turn on CH□ Sensor two-point correction offset
latch request (RY28, RY2A, RY2C, RY2E).
Check that CH□ Sensor two-point correction
offset latch completion flag (RX28, RX2A, RX2C,
*2
RX2E) is on.
Turn off CH□ Sensor two-point correction offset
latch request (RY28, RY2A, RY2C, RY2E).
2
Enter a correction gain value.*
*1 Enter the value using devices such as a thermocouple, platinum resistance thermometer, and standard DC voltage
generator, or based on a general resistance value.
*2 When the latch is completed, the temperature process value (PV) is stored in CH Sensor two-point correction offset
value (measured value) (address: 284H, 288H, 28CH, 290H). (Page 352, Appendix 3 (52))
*3 When the latch is completed, the temperature process value (PV) is stored in CH Sensor two-point correction gain
value (measured value) (address: 286H, 28AH, 28EH, 292H). (Page 353, Appendix 3 (54))
● If a write data error (error code: 0007H) occurs during sensor two-point correction, correctly configure the setting for
sensor two-point correction again. (The value set for sensor two-point correction of when an error occurred is not written
in the temperature control module.)
● To use the value set for sensor two-point correction even after the power is turned off and on, back up the value with the
following method.
• Turn off and on Set value backup instruction (RY15). (Page 296, Appendix 1.2 (5))
134
*1
1
Set a temperature process value (PV) to be input
to CH□ Sensor two-point correction gain value
(corrected value) (address: 287H, 28BH, 28FH, 293H).
Turn on CH□ Sensor two-point correction gain
latch request (RY29, RY2B, RY2D, RY2F).
Check that CH□ Sensor two-point correction gain
latch completion flag (RX29, RX2B, RX2D, RX2F)
*3
is on.
Turn off CH□ Sensor two-point correction gain
latch request (RY29, RY2B, RY2D, RY2F).
Turn on Initial data setting request flag (RY9).
Check that Initial data setting completed flag
(RX9) is on.
Turn off Initial data setting request flag (RY9).
Is the ERR.LED off?
YES
End
NO
Go back to 1 or 2.