Appendix 2 Special Register List - Mitsubishi Q00JCPU User Manual

APPENDICES

Appendix 2 Special Register List

The special registers, SD, are internal registers with fixed applications in the PLC.
For this reason, it is not possible to use these registers in sequence programs in the same
way that normal registers are used.
However, data can be written as needed in order to control the CPU modules and remote
I/O modules.
Data stored in the special registers are stored as BIN values if no special designation has
been made to the contrary.
The heading descriptions in the following special register lists are shown in TableApp.17.
Item
Number • Indicates special register number
Name • Indicates name of special register
Meaning • Indicates contents of special register
Explanation • Discusses contents of special register in more detail
• Indicates whether the relay is set by the system or user, and, if it is set by the system, when setting is performed.
<Set by>
S : Set by system
U : Set by user (sequence programs or test operations from GX Developer)
S/U : Set by both system and user
<When set>
Set by Indicated only for registers set by system
(When set) Each END
Initial
Status change
Error
Instruction execution
Request
System switching
• Indicates corresponding special register in ACPU
Corresponding ACPU
(When the contents are changed, the special register is represented D9
M9 and QnPRH.)
• New indicates the special register newly added to the QnACPU or Q series CPU module.
Indicates the relevant CPU module.
QCPU
Q00J/Q00/Q01
Qn(H)
Corresponding CPU
QnPH
QnPRH
QnA
Rem
Each CPU type name
For details on the following items, refer to the following manuals:
• Networks
• SFC
POINT
TableApp.17 Explanation of special register list
: Set during each END processing
: Set only during initial processing (when power supply is turned ON, or when going from STOP Sto RUN)
: Set only when there is a change in status
: Set when error occurs
: Set when instruction is executed
: Set only when there is a user request (through SM, etc.)
: Set when system switching is executed.
: Indicates all the QnACPU and QCPU.
: Indicates all the Q series CPU modules.
: Indicates the Basic model QCPU.
: Indicates the High Performance model QCPU.
: Indicates the Process CPU.
: Indicates the Redundant CPU.
: Can be applied to QnA series and Q2ASCPU series
: Can be applied to the MELSECNET/H remote I/O modules.
: Can be applied only to the specific CPU. (e.g. Q4AR, Q3A)
Manual of the corresponding network module
QCPU(Q mode)/QnACPU Programming Manual (SFC)
1. SD1200 to SD1255 are used for QnACPU.
These relays are vacant with QCPU.
2. Special register SD1500 and later are dedicated for Q4ARCPU, QnPRHCPU.
Function of Item
format change. Incompatible with the Q00J/Q00/Q01
Appendix 2 Special Register List
9
10
11
App
- 28