Siemens SIMATIC IM 151/CPU, Руководство пользователя

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Instruction List
B-50
ET 200S Interface Module IM 151/CPU
A5E00058783-01
B.40 Jump Instructions
Jumping as a function of conditions. The jump width in an 8-bit address ID is
between (–128 to +127). The jump width in 16-bit address IDs is between (–32768
to –129) or (+128 to +32767).
Note on JC
Please note in the case of CPU 614 programs that the jump destination always
forms the beginning of a Boolean logic string. The jump destination must not be
included in the logic string.
In-
struc-
tion
Address
ID
Description
Length
in
Words
Typical Execution Time in
s
JU LABEL Jump unconditionally 1*/2 1.8
Status word for: JU BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: – – – – – – – – –
Instruction controls: – – – – – – – – –
JC LABEL Jump if RLO=”1” 1/2 1.5
JCN LABEL Jump if RLO=”0” 2 1.6
Status word for: JC, JCN BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: – – – – – – – Yes –
Instruction controls: – – – – – 0 1 1 0
JCB LABEL Jump if RLO=”1”
Save the RLO in the BR bit 2 1.8
JNB LABEL Jump if RLO=”0”
Save the RLO in the BR bit 2 1.8
Status word for: JCB, JNB BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: – – – – – – – Yes –
Instruction controls: Yes – – – – 0 1 1 0
JBI LABEL Jump if BR=”1” 2 1.5
JNBI LABEL Jump if BR=”0” 2 1.5
Status word for: JBI, JNBI BR A1 A0 OV OS OR STA RLO /FC
Instruction depends on: Yes – – – – – – – –
Instruction controls: – – – – – 0 1 – 0
* 1 word long for jump widths of between –128 and +127