Maximum And Minimum Value Hold Function; I/O Signals For The Programmable Controller Cpu; List Of I/O Signals - Mitsubishi Electric Melsec Q Series User Manual

3 SPECIFICATIONS

3.2.2 Maximum and minimum value hold function

3.3 I/O Signals for the Programmable Controller CPU

3.3.1 List of I/O signals

Signal direction CPU
Device No. (Input)
X0
X1 Temperature drift compensation flag
X2
X3
X4
X5
X6
X7
X8
X9 Operating condition setting completed flag
XA
XB
XC
Maximum value/minimum value reset
XD
XE
XF
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(1) The maximum and minimum value of Digital output value for each channel are
stored in Maximum and minimum values storage area (buffer memory address 30
to 45: Un\G30 to Un\G45).
(2) When Operating condition setting completed flag (X9) turns off, the values are
cleared to 0 and new maximum and minimum values are stored when conversion
begins.
(3) Since Maximum and minimum values storage area (buffer memory address 30
to 45: Un\G30 to Un\G45) 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 converter modules.
Note that I/O numbers (X/Y) shown in this chapter and thereafter are the values when
the start I/O number for the A/D converter module is set to 0.
Table 3.3 List of I/O signal
A/D converter module
Signal name
Module READY
1
Use prohibited
High resolution mode status flag
Offset/gain setting mode flag
Channel change completed flag
1
Use prohibited
completed flag
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
converter module cannot be guaranteed.
Signal direction CPU
Device No. (Output)
Y0
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9 Operating condition setting request
YA
YB
YC
Maximum value/minimum value reset
YD
YE
YF
MELSEC-Q
A/D converter module
Signal name
1
Use prohibited
User range writing request
Channel change request
1
Use prohibited
request
1
Use prohibited
Error clear request
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