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GFK-0467K Chapter 4 Series 90-30/20/Micro Instructions Set 4-133
4
Parameters:
Parameter Description
enable When enable is energized, the request service request is performed.
FNC FNC contains the constant or reference for the requested service.
PARM PARM contains the beginning reference for the parameter block for the requested
service.
ok The ok output is energized when the function is performed without error.
Valid Memory Types:
Parameter flow %I %Q %M %T %S %G %R %AI %AQ const none
enable •
FNC • • • • • • • • •
PARM • • • • • • • •
ok • •
• Valid reference or place where power may flow through the function.
Example:
In the following example, when the enabling input %I0001 is ON, SVCREQ function number 7 is
called, with the parameter block located starting at %R0001. Output coil %Q0001 is set ON if the
operation succeeds.
| _____
|%I0001 | | %Q0001
|——| |———| SVC_|———————————————————————————————————————————————————————————( )—
| | |
| | REQ |
| | |
| CONST —|FNC |
| 00007 | |
| | |
| | |
|%R0001 —|PARM |
| |_____|
|