Loop Disconnection Detection Dead Band Setting (Buffer Memory Address: 3C H , 5C H , 7C H , 9C H ); Unused Channel Setting (Buffer Memory Address: 3D H , 5D H , 7D H , 9D H ); E H , 5E H , 7E H , 9E H; Prom's Pid Constant Read Command (Buffer Memory Address: 3E ) - Mitsubishi Electric MELSECSystem Q User Manual

3 SPECIFICATIONS
3.5.32 Loop disconnection detection dead band setting
(buffer memory address: 3C
3.5.33 Unused channel setting (buffer memory address: 3D
2
3.5.34 E PROM's PID constant read command
(buffer memory address: 3E
3 - 43
, 5C
H
(1) To prevent the false alarm of loop disconnection detection, set the non-alarm area
(temperature width where loop disconnection will not be detected) around the set
value.
Process value (PV)
Set value (SV)
(2) The setting range is within the temperature setting range defined by the input
range setting (refer to Section 3.5.12).
For example, if the loop disconnection detection dead band setting is "50" at the
input range setting of 38, loop disconnection detection judgment is not made
within the set value 5.0°C range.
(1) Used to specify as unused the channels where temperature control will not be
performed and temperature sensors will not be connected.
(2) For the channels set as unused, the "ALM" LED will not be lit if a temperature
sensor is not connected.
(3) Making default setting registration (Yn9: ON) clears the unused channel setting.
When there are channels where temperature control is not performed and
temperature sensors are not connected, make unused channel setting after
completion of default setting registration.
, 5E
H
(1) This command reads PID constants from E
Turn on this command to read E
addresses.
Buffer memory address name
Proportional band (P) setting
Integral time (I) setting
Derivative time (D) setting
Loop disconnection detection judgment
time
(2) This function is the most suitable for use when you want to use the initial settings
of the utility and the PID constants backed up on E
(3) When this command is on, do not make a set value change, E
default setting registration.
, 7C , 9C )
H H H
Non-alarm area
, 7E , 9E )
H H H
2
PROM values to the following buffer memory
CH1
23
H
24
H
25
H
3B
H
Loop disconnection detection
dead band setting
Time
, 5D , 7D , 9D )
H H H H
2
PROM to buffer memory.
Addresses (Hexadecimal)
CH2 CH3
43 63
H H
44 64
H H
45 65
H H
5B 7B
H H
2
PROM together.
2
PROM backup and
MELSEC-Q
CH4
83
H
84
H
85
H
9B
H
3 - 43