Special Internal Relays - IDEC SmartAXIS FT9Z-1A01 User Manual

7: D A
EVI CE DDR ESSES

Special Internal Relays

Special internal relays M8000 through M8177 are used for controlling the CPU operation and communication, and for indicating the
CPU statuses. All special internal relays cannot be used as destinations of advanced instructions.
Internal relays M300 through M335 are used to read input device statuses of the IOREF (I/O refresh) instruction.
Note: Do not change the status of reserved special internal relays, otherwise the SmartAXIS may not operate correctly.
Special Internal Relay Device Addresses
Device
Address
M8000 Start Control
M8001 1-sec Clock Reset
M8002 All Outputs OFF
M8003
Carry (Cy) or Borrow (Bw)
M8004
User Program Execution Error
M8005 Remote I/O Slave 1 Communication Error
M8006 Remote I/O Slave 2 Communication Error
M8007
Remote I/O Slave 3 Communication Error
M8010
In daylight saving time period (system version 1.10 or later)
M8011-
M8012
M8013 Calendar/Clock Data Write/Adjust Error Flag
M8014 Calendar/Clock Data Read Error Flag
M8015
M8016
Calendar Data Write Flag
M8017 Clock Data Write Flag
M8020 Calendar/Clock Data Write Flag
M8021 Clock Data Adjust Flag
M8022
User Communication Receive Instruction Cancel Flag (Port 2)
M8023 User Communication Receive Instruction Cancel Flag (Port 3)
M8024 BMOV/WSFT Executing Flag
M8025 Maintain Outputs While CPU Stopped
M8026
SD Memory Card Status
M8027
SD Memory Card Writing Flag
M8030
M8031
M8032
M8033
High-speed Counter (Group 1/I0)
M8034
M8035
M8036
M8037
M8040
M8041
M8042
High-speed Counter (Group 2/I2)
M8043
M8044
M8045
M8046
M8047
M8050
High-speed Counter (Group 3/I3)
M8051
M8052
M8053
M8054
7-2
Description
— Reserved —
— Reserved —
Comparison Output Reset
Gate Input
Reset Input
Reset Status
Comparison ON Status
Overflow
Underflow
Count Direction
Comparison Output Reset
Gate Input
Reset Input
Comparison ON Status
Overflow
Comparison Output Reset
Gate Input
Reset Input
Reset Status
Comparison ON Status
Overflow
Underflow
Count Direction
S A XI S P / L U
M AR T R O I TE
CPU
Stopped
Maintained Maintained
Cleared Cleared
Cleared Cleared
Cleared Cleared
Cleared Cleared
Operating Cleared
Operating Cleared
Operating Cleared
Operating Cleared
―
Operating Cleared
Operating Cleared
―
Operating Cleared
Operating Cleared
Operating Cleared
Operating Cleared
Cleared Cleared
Cleared Cleared
Maintained Maintained
Maintained Cleared
Maintained Cleared
Maintained Cleared
Cleared Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Cleared Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Cleared Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
Maintained Cleared
' M FT9Y-B 1378
SER S ANUAL
Power Read/
Ladder
OFF Write
Write
Write
Write
Read
Read
Read
Read
Read
Read
― ―
Read
Read
― ―
Write
Write
Write
Write
Write
Write
Read
Read/Write
Read
Read
Read/Write
Read/Write
Read/Write
Read
Read
Read
Read
Read
Read/Write
Read/Write
Read/Write
Read
Read
Read/Write
Read/Write
Read/Write
Read
Read
Read
Read
Read
FBD
X X
X X
X X
X ―
X X
X X
X X
X X
X X
― ―
X X
X X
― ―
X X
X X
X X
X X
X ―
X ―
X ―
X X
X X
X X
*
X X
*
X X
*
X X
X X
X X
X X
X X
X X
*
X X
*
X X
*
X X
X X
X X
*
X X
*
X X
*
X X
X X
X X
X X
X X
X X