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3.4.2 Details of the buffer memory
This chapter describes details on the buffer memory of the Q64TCN.
For buffer memory areas indicated with the icon , the following terms are used, unless otherwise specified.
• Proportional band (P): includes heating proportional band (Ph) and cooling proportional band (Pc)
• Manipulated value (MV): includes manipulated value for heating (MVh) and manipulated value for cooling (MVc)
• Transistor output: includes heating transistor output and cooling transistor output
• Control output cycle: includes heating control output cycle and cooling control output cycle
(1) Write data error code (Un\G0)
An error code or alarm code is stored in this buffer memory area.
For error codes and alarm codes, refer to the following.
Page 367, Section 8.6, Page 370, Section 8.7
(2) CH Decimal point position (Un\G1 to Un\G4)
According to the setting of CH Input range (Un\G32, Un\G64, Un\G96, Un\G128), the decimal point position
applicable in the following buffer memory areas is stored in this buffer memory area.
Buffer memory area name
Buffer memory address
Reference
CH1 CH2 CH3 CH4
CH Temperature process value (PV) Un\G9 Un\G10 Un\G11 Un\G12 Page 89, Section 3.4.2 (4)
CH Set value (SV) setting Un\G34 Un\G66 Un\G98 Un\G130
Page 104, Section 3.4.2
(14)
CH Alert set value 1 Un\G38 Un\G70 Un\G102 Un\G134
Page 108, Section 3.4.2
(18)
CH Alert set value 2 Un\G39 Un\G71 Un\G103 Un\G135
CH Alert set value 3 Un\G40 Un\G72 Un\G104 Un\G136
CH Alert set value 4 Un\G41 Un\G73 Un\G105 Un\G137
CH AT bias setting Un\G53 Un\G85 Un\G117 Un\G149
Page 120, Section 3.4.2
(29)
CH Upper limit setting limiter Un\G55 Un\G87 Un\G119 Un\G151
Page 122, Section 3.4.2
(31)
CH Lower limit setting limiter Un\G56 Un\G88 Un\G120 Un\G152
CH Loop disconnection detection dead
band
Un\G60 Un\G92 Un\G124 Un\G156
Page 125, Section 3.4.2
(34)
CH Sensor two-point correction offset
value (measured value)
Un\G544 Un\G576 Un\G608 Un\G640
Page 142, Section 3.4.2
(58)
CH Sensor two-point correction offset
value (corrected value)
Un\G545 Un\G577 Un\G609 Un\G641
Page 142, Section 3.4.2
(59)
CH Sensor two-point correction gain value
(measured value)
Un\G546 Un\G578 Un\G610 Un\G642
Page 143, Section 3.4.2
(60)
CH Sensor two-point correction gain value
(corrected value)
Un\G547 Un\G579 Un\G611 Un\G643
Page 143, Section 3.4.2
(61)
CH Simultaneous temperature rise
gradient data
Un\G731 Un\G747 Un\G763 Un\G779
Page 154, Section 3.4.2
(81)
Common
Common
Common