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100

101

18-5

Ladder Logic (LAD) for S7-300 and S7-400

C79000-G7076-C504-02

18.4 Jump in the Block If RLO = 0 (Jump-If-Not)

The Jump-If-Not instruction corresponds to a “go to label” instruction that is

executed if the RLO is 0.

You can use this instruction in all logic blocks: organization blocks (OBs),

function blocks (FBs), and functions (FCs).

Table 18-3 Jump-If-Not Element and Parameters

LAD Element Parameter Data Type Memory Area Description

JMP N

Name of a

label

– – The address determines the mark to

which the jump is made when the

RLO = 0.

Status Word Bits

BR CC 1 CC 0 OV OS OR STA RLO FC

Write – – – – – 0 1 1 0

CAS1

JMPN

I 0.4 Q 4.1

Network 1

Network 3

If the signal state of input I 0.0 is 0, the

jump to label CAS1 is executed. The

instruction to reset output Q 4.0 is not

executed, even if the signal state of input

I 0.3 is 1.

None of the instructions between the

jump operation and the label is executed.

I 0.0

I 0.3 Q 4.0

CAS1

Network 2

Figure 18-4 Jump-If-Not

Description

Jum

Instructions

1 2 ... 218 219 220 221 222 223 224 225 226 227 228 ... 317 318

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