Omron SCARA YRCX Series, Programming Manual, Page: 83 / 506

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Programming a sequence program 7-5
4
Programming a sequence program
When programming a sequence program, you may use only assignment statements comprised of
input/output variables and logical operators.
4.1 Assignment statements
Format
output variable = expression
Values expression ............................. Any one of the following can be used.
• Parallel input/output variables
• Internal output variables
• Arm lock output variables
• Timer output variables
• Serial input/output variable
• The logic operation expression shown above
4.2 Input/output variables
Each variable must be specified in a 1-bit format
·Correct examples DO(35)
MO(24)
DI(16)
·Incorrect examples DO(37, 24)
DI3(4)
MO3()
4.2.1 Input variables
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Parallel input variables
Format
DI(mb) m: Port number ·············· 0 to 7, 10 to 17, 20 to 27
b: bit definition ············ 0 to 7
These variables show the status of the parallel input signal.
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Serial input variables
Format
SI(mb) m: Port number ·············· 0 to 7, 10 to 17, 20 to 27
b: bit definition ············ 0 to 7
Indicates a serial input signal status. Only referencing can occur. No controls are possible.