Maximum And Minimum Values Hold Function; I/O Signals For The Plc Cpu; List Of I/O Signals - Mitsubishi Q64AD User Manual

3 SPECIFICATIONS

3.2.2 Maximum and minimum values hold function

3.3 I/O Signals for the PLC CPU

3.3.1 List of I/O signals

Signal direction CPU
Device No. (Input)
X00
X01 Temperature drift compensation flag
X02
X03
X04
X05
X06
X07
X08
X09 Operating condition setting completed flag
X0A
X0B
X0C
X0D
X0E
X0F
(1) The maximum and minimum digital output values for each channel are stored in buffer
memory addresses 30 to 45 (Un\G30 to Un\G45).
(2) When the operating condition setting completed flag (X09) turns OFF, the values
are cleared to 0 and new maximum and minimum values are stored when
conversion begins.
(3) Since the area for storing the maximum and minimum values can be rewritten with
the sequence program, the maximum and minimum values within a specific period
of time can be checked.
Table 3.3 shows a list of the I/O signals for the A/D conversion modules.
Table 3.3 List of I/O signal
A/D conversion module
Signal name
Module READY
Use prohibited 1
Offset/gain setting mode flag
Channel change completed flag
Use prohibited 1
A/D conversion completed flag
Error flag
POINT
1 These signals cannot be used by the user since they are for system use only.
If these are turned ON/OFF by the sequence program, the functioning of the
A/D conversion module cannot be guaranteed.
Signal direction CPU
Device No. (Output)
Y00
Y01
Y02
Y03
Y04
Y05
Y06
Y07
Y08
Y09
Y0A
Y0B
Y0C
Maximum value/minimum value reset
Y0D
Y0E
Y0F
3 - 8
MELSEC-Q
A/D conversion module
Signal name
Use prohibited
Operating condition setting request
User range write request
Channel change request
Use prohibited
request
Use prohibited
Error clear request
1
1
1