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Chapter Four PLC Basis Code
25
Volume I
Programming
4.3 OR, OR.NOT Codes
Mnemonic symbol and function
Table 4-3-1
Mnemonic
symbol
Function
OR Logic
OR
OR.NOT
Logic OR after the specified state is NOT
Code explanation
z
Connect 1 contact with series connection using the OR and OR.NOT code.
z
OR, OR.NOT is started from the step of this code; it can be connected with series connection
with the abovementioned RD, RD.NOT code step.
For example:
Fig. 4-3-1
4.4 OR. STK Code
Mnemonic symbol and function
Table 4-4-1
Mnemonic symbol
Function
OR. STK
Right shift 1-bit of the stacked register after ST0 and ST1 logic OR
Code explanation
z
OR.STK code is the separate code without any address.
For example:
Fig. 4-4-1
