Справочник Пользователя для Mitsubishi Electronics Q64TCTTN
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3.1.2
Sampling cycle and control output cycle
This section describes the sampling cycle and control output cycle of the Q64TCN.
(1) Sampling cycle
The Q64TCN performs PID operations in the order of CH1, CH2, CH3, CH4, CH1, CH2 .....
The time from when PID operation is started on the current channel (CHn) until PID operation is restarted on the
current channel (CHn) is called a sampling cycle. The sampling cycle is 500ms.
The number of used channels and the settings of unused channels do not affect the sampling cycle.
The time from when PID operation is started on the current channel (CHn) until PID operation is restarted on the
current channel (CHn) is called a sampling cycle. The sampling cycle is 500ms.
The number of used channels and the settings of unused channels do not affect the sampling cycle.
(2) Control output cycle
The control output cycle is the ON/OFF cycle of transistor output.
The manipulated value (MV) represents the ON time of the control output cycle in percentage. (
Section 3.4.2 (5))
Set the control output cycle in the following buffer memory area in the range 1 to 100s.
Set the control output cycle in the following buffer memory area in the range 1 to 100s.
• CH Control output cycle setting (Un\G47, Un\G79, Un\G111, Un\G143) (
In the heating-cooling control, the following buffer memory areas are used for the manipulated value (MV) and
control output cycle.
control output cycle.
Data type
Buffer memory area
name
Buffer memory address
Reference
CH1
CH2
CH3
CH4
Manipulated
value (MV)
Manipulated value for
heating (MVh)
heating (MVh)
Un\G13
Un\G14
Un\G15
Un\G16
Manipulated value for
cooling (MVc)
cooling (MVc)
Un\G704
Un\G705
Un\G706
Un\G707
Control output
cycle
Heating control output
cycle setting
cycle setting
Un\G47
Un\G79
Un\G111
Un\G143
Cooling control output
cycle setting
cycle setting
Un\G722
Un\G738
Un\G754
Un\G770
500ms (sampling cycle)
500ms (sampling cycle)
CH1 PID
operation
operation
CH2 PID
operation
operation
CH3 PID
operation
operation
CH4 PID
operation
operation
CH1 PID
operation
operation
CH2 PID
operation
operation
Transistor output
OFF
ON
ON
OFF
Control output cycle
Control output cycle