IDEC MicroSmart - Manual (Page 383)

23: I NTELLIGENT M ODULE A CCESS I NSTRUCTIONS
« FC4A M ICRO S MART U SER ’ S M ANUAL » 23-5
STPA WRITE (Stop Access Write)
Note: STPA READ and STPA WRITE instructions can be used 64 times in a user program. When more than 64 STPA READ
and STPA WRITE instructions are used in a user program, the excess instructions are not executed and error code 7 is
stored in the data register designated as STATUS.
Applicable CPU Modules
Valid Operands (Run Access Write)
For the valid operand number range, see pages 6-1 and 6-2.
DATA: Specify the first operand number to extract the data to write to the intelligent module.
When T (timer) or C (counter) is used as DATA for Stop Access Write, the timer/counter current value is
written to the intelligent module.
All data registers, including special data registers, AS-Interface data registers, and expansion data registers,
can be designated as DATA.
When a constant is designated as DATA, Repeat cannot be selected. For details about the data movement
with or without Repeat, see page 23-7.
STATUS: Specify a data register to store the operating status code. Only data registers D0 through D1299 can be des-
ignated as STATUS. Special data registers, AS-Interface data registers, and expansion data registers cannot
be designated whether the AS-Interface master module is used or not. For status code description, see
page 23-6.
SLOT: Enter the slot number where the intelligent module is mounted. A maximum of seven intelligent modules
can be used.
ADDRESS: Specify the first address in the intelligent module to store the data.
BYTE: Specify the quantity of data to write in bytes.
The STPA WRITE instruction cannot be used in an interrupt program. If used, a user program execution error will result,
turning on special internal relay M8004 and the ERR LED on the CPU module.
If a STPA WRITE instruction is programmed between MCS and MCR instructions, the STPA WRITE instruction is exe-
cuted when the CPU module is stopped regardless whether the input condition for the MCS instruction is on or off. For
MCS and MCR instructions, see page 7-23.
Valid Data Types
FC4A-C10R2/C FC4A-C16R2/C FC4A-C24R2/C FC4A-D20K3/S3 FC4A-D20RK1/RS1 & FC4A-D40K3/S3
— — X X X
Operand Function I Q M R T C D Constant Repeat
DATA First operand number to extract data from X X X X X X X X X
STATUS Operating status code — — — — — — X — —
SLOT Intelligent module slot number — — — — — — — 1-7 —
ADDRESS First address in intelligent module to write data to — — — — — — — 0-127 —
BYTE Bytes of data to write — — — — — — — 1-127 —
W (word) I (integer)
X X
When the CPU module stops, data in the area
star ting at the operand designated by DATA is
written to ADDRESS in the intelligent module
designated by SLOT.
BYTE designates the quantity of data to write.
STATUS stores the operating status code.
DATA(R)
*****
SLOT
*
STATUS
*****
BYTE
***
ADDRESS
***
STPA(*)
WRITE
Star t input is not needed for this instruction.
When a bit operand such as I (input), Q (output), M (internal relay), or R (shift register) is
designated as DATA, 16 points are used.
When a word operand such as T (timer), C (counter), or D (data register) is designated as
DATA, 1 point is used.