
B-63983EN/02 4.LADDER LANGUAGE
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Control conditions
(a) Reset (RST)
RST=0: Release reset
RST=1: Resets error output W1. In other words, makes W1=0.
(b) Command (ACT)
ACT=0: Do not execute MULB. W1 does not change now.
ACT=1: Execute MULB.
Parameters
(a) Format specification
Specifies data length (1, 2, and 4 bytes) and the format for the
multiplier (constant or address).
Data length specification
1: 1 byte length data
2: 2 bytes length data
4: 4 bytes length data
0
Format specification
0: Constant data
1: Address data
0
(b) Multiplicand address
Address containing the multiplicand.
(c) Multiplier data (address or constant)
Specification in (a) determines the format of the multiplier.
(d) Result output address
Specifies the address to contain the result of operation.
Error output (W1)
W1=0: Operation correct
W1=1: Operation incorrect
W1 goes on (W1=1) if the result of multiplication exceeds
the specified data length.