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Basic I/O Unit Instructions Section 3-23
3-23 Basic I/O Unit Instructions
This section describes instructions used with I/O Units.
3-23-1 I/O REFRESH: IORF(097)
Purpose Refreshes the specified I/O words.
Ladder Symbol
Variations
Applicable Program Areas
Operands St: Starting Word
CIO 0000 to CIO 0999 (I/O Bit Area) or
CIO 2000 to CIO 2959 (Special I/O Unit Bit Area)
E: End Word
CIO 0000 to CIO 0999 (I/O Bit Area) or
CIO 2000 to CIO 2959 (Special I/O Unit Bit Area)
Note St and E must be in the same memory area.
Operand Specifications
Instruction Mnemonic Function code Page
I/O REFRESH IORF 097 926
SPECIAL I/O UNIT I/O REFRESH FIORF 225 929
CPU BUS UNIT I/O REFRESH DLNK 226 932
7-SEGMENT DECODER SDEC 078 937
INTELLIGENT I/O READ IORD 222 962
INTELLIGENT I/O WRITE IOWR 223 967
DIGITAL SWITCH INPUT DSW 210 940
TEN KEY INPUT TKY 211 945
HEXADECIMAL KEY INPUT HKY 212 948
MATRIX INPUT MTR 213 953
7-SEGMENT DISPLAY OUTPUT 7SEG 214 957
IORF(097)
St
E
St: Starting word
E: End word
Variations Executed Each Cycle for ON Condition IORF(097)
Executed Once for Upward Differentiation @IORF(097)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK OK
Area St E
CIO Area CIO 0000 to CIO 0999
CIO 2000 to CIO 2959
Auxiliary Area ---
Holding Bit Area ---
Special Bit Area ---
Timer Area ---
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