Appendix 7 List Of Special Registers - Mitsubishi Electric MELSEC Q Series User Manual

Appendix 7
The special register (SD) is an internal register whose application is fixed in a C Controller module.
The special relay cannot be used in the same way as other internal relays are used in user programs.
Data is stored in binary format unless otherwise specified.
Item
Number
Name
Description
Detailed
description
Setting side
(setting time)
(1) Diagnostic information
Number Name
SD0 Diagnostic error
SD1
Date and time of
SD2
diagnostic error
SD3
Error information
SD4
identification
480
List of Special Registers
Indicates the number of the special register
Indicates the name of the special register.
Indicates descriptions about the special register.
Indicates detailed descriptions about the special register.
Explains setting side and setting time at the system side.
• Setting side
S : Set at the system side.
• Setting time
System : Set when a fixed scan or the status is changed at the system side.
Initial : Set only at initialization (power on, STOP RUN, etc.)
Error : Set when an error occurs.
Description
• The error code occurred in diagnostics in diagnostics is stored as a
Diagnostic error
binary code.
code
• The information is the same as the latest error code.
• The year (the last two digits of the year) and month when SD0 data
was updated are stored as a 2-digit BCD code.
b15
to
YY (0 to 99)
• The date and time when SD0 data was updated are stored as a 2-
Date and time of digit BCD code.
diagnostic error
b15 to
DD (1 to 31)
• The minute and second when SD0 data was updated are stored as
a 2-digit BCD code.
b15 to
Min. (0 to 59) Sec. (0 to 59)
• Identification codes used to determine what error information stored
in the common information (SD5 to SD15) and individual
information (SD16 to SD26) are stored.
b15
Individual information
• In the common information category codes, the following codes are stored.
Error information
0: None
identification
1: Module No. (Slot No./CPU No./Base No.)
code
3: Time (setting value)
7: Base No./power supply
• In the individual information category codes, the following codes are stored.
00: None
3: Time (actual measurement value)
5: Parameter No.
Description
Detailed description
(Example) October, 1995
b8 b0
b7 to
MM (1 to 12)
(Example) Day of 25th, 10:00
b8 b7 to b0
Hr. (0 to 23)
b8 b7 to b0 (Example) 35 minutes, 48 seconds
to b8 b7 to
Common information
category code category code
Setting side
(setting time)
H9510
H2510
H3548
b0
S
(Error)
S
(Error)
S
(Error)
S
(Error)
S
(Error)