337
APPENDICES
A
Appendix
3 Det
a
ils of
Rem
o
te
Buf
fer Me
mory
A
reas
(28)CH
Automatic backup setting after auto tuning of PID constants (address:
119H, 149H, 179H, 1A9H)
The set value to be stored in the remote buffer memory is automatically backed up to a non-volatile memory by
using this function. By reading the set value that is backed up, when the power is turned off and on, another auto
tuning can be omitted.
For details on the auto tuning function, refer to the following.
(a) Remote buffer memory areas whose set value is backed up to a non-volatile
memory
The following table lists the remote buffer memory areas whose setting is backed up.
(b) Setting range
• 0: Disable
• 1: Enable
(c) Enabling the setting
Enable the setting contents by either of the following.
• Turning off and on Initial data setting request flag (RY9) while the operations of all channels are stopped
• Turning off and on During operation setting change instruction (RY10)
(d) Default value
The default values are set to Disable (0) in all channels.
(e) Precautions
When Enable (1) is set, do not perform the following operations. An incorrect value may be stored in the non-
volatile memory.
• Changing the set value of the remote buffer memory
• Memory back up (
• Default setting registration (
• Change to Disable (0) during the auto tuning
Remote buffer memory area name
Remote buffer memory address
Reference
CH1
CH2
CH3
CH4
CH
Proportional band (P) setting
102H
132H
162H
192H
CH
Heating proportional band (Ph) setting
102H
132H
162H
192H
CH
Cooling proportional band (Pc) setting
1C4H
1C9H
1CEH
1D3H
CH
Integral time (I) setting
103H
133H
163H
193H
CH
Derivative time (D) setting
104H
134H
164H
194H
CH
Loop disconnection detection judgment time
116H
146H
176H
1A6H
Standard
Heating-cooling
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