958
Basic I/O Unit Instructions Section 3-23
Ladder Symbol
Variations
Applicable Program Areas
Operands S: Source Word
Specify the first source word containing the data that will be converted to 7-
segment display data.
O: Output Word (Data and Latch Outputs)
Specify the output word allocated to the Output Unit and connect the 7-seg-
ment display to the Output Unit as shown in the following diagram.
• Converting 4 digits
• Converting 8 digits
7SEG(214)
S
O
C
D
S: Source word
O: Output word
C: Control data
D: System word
Variations Executed Each Cycle for ON Condition 7SEG(214)
Executed Once for Upward Differentiation Not supported.
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program areas Step program areas Subroutines Interrupt tasks
Not allowed OK OK Not allowed
S
815 1211 0347
S+1
815 1211 0347
Digit 1
Digit 2
Digit 3
Digit 4
Digit 5
Digit 6
Digit 7
Digit 8
0123456789101112131415
−−−−−−−
O
D0
D1
D2
D3
LE3
LE2
LE1
LE0
4-digit data output
Latch outputs
One Round Flag
0123456789101112131415
−−−
O
D0
D1
D2
D3
LE3
LE2
LE1
LE0
D0
D1
D2
D3
Leftmost 4-digit data output
Rightmost 4-digit data output
Latch outputs
One Round Flag