Two ways to set the address of the S7-300 address register - Database & Sql Blog Articles

300-04043
Probe domestic double-head probe 038-BB-5.7L The shape of the two ends of the needle is outside the pointed needle
SMD aluminum electrolytic capacitor
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OPN DB100
L 0
LAR1
L 3500
ITD
RLD 3
+AR1
L DBW [AR1, P#0.0] //Read DB100.DBW3500
However, after the address >4095, since the value of 4096 is RLD 3, the value is greater than or equal to 32768.
Causes a value error in AR1 (a large value).
Therefore, it is no longer possible to obtain the correct address value by shifting 3 bits to the left.
Ask you what other solutions? Thank you.

A: The program can be simplified to the program in the following figure:
L#4500 is a double word constant, so there is no 4095 limit.

The address pointer constant P#4500.0 has a byte address of 4500, and the bit address in the byte is 0. P#4500.0 is equivalent to the product of 3500 and 8 (an integer in bits). RLD 3 (shifting 3 bits to the left) is equivalent to multiplying by 8.

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