Appendices; Appendix 1 Tag Data List - Mitsubishi Electric MELSEC iQ-R Series Programming Manual

APPENDICES

Appendix 1
How to read items in the list is shown below.
Item
Offset
Label
Data type
Setting/Storage range (Low limit/
High limit)
Initial value
Number of digits after the decimal
point
Unit
Application
Storage
Tag access FB
The following table describes Boolean items of tag data.
Item
Control mode
Disable Mode Change
Alarm
Disable alarm detection
Alarm level
APPX
490

Appendix 1 Tag Data List

Tag Data List
Description
Indicates the offset word of memory data inside the tags.
Indicates tag data (tag member).
Indicates the memory data structure.
• BOOL: Bit
• WORD: Integer data (word [unsigned]/bit string [16 bits])
• INT: Integer data (word [signed])
• DINT: Integer data (double word [signed])
• REAL: Real number data (single-precision real number)
Indicates the setting range of all items.
Refer to following range for PH, PL, HH, LL setting/storage range.
• PV high limit alarm value (PH_): (RL) to (RH) and (PL) < (PH_)
• PV low limit alarm value (PL): (RL) to (RH) and (PL) < (PH_)
• PV high high limit alarm value (HH): (RL) to (RH) and (PH_)  (HH)
• PV low low limit alarm value (LL): (RL) to (RH) and (LL)  (PL)
Set the control cycle (CT) to the integral multiple of an execution cycle.
The execution cycle indicates an execution cycle set by GX Works3 and an execution cycle of a program block property.
[Tool]  [Options]  [Convert]  [Process Control Extension Setting]
Indicates default value.
Indicates the number of digits after the decimal point. N is indicated by the number of digits after the decimal point of
+9[N_].
Indicates units.
UNIT is set in the "Unit Setting" window of PX Developer.
[Monitor Tool Setting]  [Unit Setting]
Indicates the name/application of tag data (tag member).
Indicates whether it is allowed to read/write tag data using programs.
■User
It is allowed to read/write tag data. However, tag data with (condition 1/2/3) can only be written only under the following
conditions.
• Condition 1: When changing the control mode using a program, use M+P_MCHG of the tag access FB. Switch to the
control mode with TRUE as the corresponding bit item of mode inhibition is not allowed.
• Condition 2: Stop alarm (SPA) and output open (OOA) of an alarm are written by a program. When the program sets
stop alarm (SPA) as TRUE, stop alarm in the corresponding loop is processed. The bit items except stop alarm (SPA)
and output open (OOA) of an alarm are written by the system. Do not write them using a program.
• Condition 3: It is allowed to write tag data only when the control mode is MAN or CMV.
■System
It is allowed only to read tag data. Do not write tag data. The operations are not guaranteed if it is written. This item is not
displayed on "FB Property" window on GX Works3.
■Tag data access control
Tag data can be written only from the ActiveX container application that uses the tag data access control that is an ActiveX
control.
For details on tag data access control, refer to the following.
 PX Developer Version 1 Operating Manual (Monitor Tool)
Indicates the tag access FB which reads/writes tag data.
Description
TRUE: Valid, FALSE: Invalid
TRUE: Valid, FALSE: Invalid
TRUE: Detected, FALSE: Reset
TRUE: Valid, FALSE: Invalid
TRUE: Major alarm, FALSE: Minor alarm