Siemens NAN 67 Series Manual de servicio descargar pdf (Pagina 36)

3-12

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

C79000-G7076-C504-02

Table 3-3 System Attributes for Parameters, continued

Attribute Permitted

Declaration type

When to Assign the AttributeValue

S7_string_0 Any 16 characters, , for

example, OPEN

When the parameter is assigned text for

evaluating binary values

IN/OUT / IN_OUT,

only with blocks of

the type FB, SFB,

FC, and SFC

S7_string_1 Any 16 characters, , for

example, CLOSE

When the parameter is assigned text for

evaluating binary values

IN/OUT / IN_OUT,

only with blocks of

the type FB, SFB,

FC, and SFC

S7_visible true, false When you do not want the parameter to be

displayed in CFC.

IN/OUT / IN_OUT,

only with blocks of

the type FB, SFB,

FC, and SFC

S7_link true, false When you do not want the parameter to be

linked in CFC.

IN/OUT / IN_OUT,

only with blocks of

the type FB, SFB,

FC, and SFC

S7_dynamic true, false When you want the parameter to have dynamic

capability when testing in CFC.

IN/OUT / IN_OUT,

only with blocks of

the type FB, SFB,

FC, and SFC

S7_param true, false When you want the parameter to be protected

from incorrect value assignment in CFC.

IN/OUT / IN_OUT,

only with blocks of

the type FB, SFB,

FC, and SFC

Creating Logic Blocks

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 317 318

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