Mitsubishi Electric MELSEC iQ-R Series User Manual page 278

Temperature conversion setting
In the heating-cooling control (normal mode), mix control (normal mode), or position-proportional control (normal mode), the
temperature measurement and rate alarm can be executed using temperature input terminals of unused channels.
The following table lists the settable buffer memory addresses for each control mode selection.
Channel Control mode
Standard
control

CH1

CH2

CH3

CH4
For the combination of the control mode and the buffer memory addresses not listed in the above table, setting values is
disabled. For details on the temperature conversion function (using unused channels), refer to the following:
Page 35 Temperature Conversion Function (Using Unused Channels)
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory area name
CH Temperature conversion setting
CH Temperature conversion setting (in the Q compatible mode)
■Setting range
• 0: Not used
• 1: Used
■Default value
The default value is Not used (0).
• When this setting is changed from Not used (0) to Used (1), 'Temperature conversion completion flag'
(Un\G43) is set to First temperature conversion completed (1H) after the completion of the first temperature
conversion. Before referring to the temperature process value (PV) of each channel, check 'Temperature
conversion completion flag' (Un\G43) has been set to First temperature conversion completed (1H).
• When the standard control, heating-cooling control (expanded mode), mix control (expanded mode), or
position-proportional control (expanded mode) has been selected, this setting is disabled.
APPX
276
Appendix 3 Buffer Memory Areas
Heating- Heating-
cooling cooling
control control
(normal (expanded
mode) mode)
 
 

920

1120
Mix control Mix control
(normal (expanded
mode) mode)
 

720
 
 
CH1 CH2

720

695
Position- Position-
proportional proportional
control control
(normal (expanded
mode) mode)
 
 

920

1120
CH3 CH4
920 1120
696 697