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GFK-0467K Chapter 4 Series 90-30/20/Micro Instructions Set 4-85
4
Example:
In the following example, when enabling input %M0020 is ON, a command block located starting
at %R0016 is sent to communications task 1 in the device located at rack 1, slot 2 of the PLC. If an
error occurs processing the COMMREQ, %Q0100 is set.
| _____
| %M0020 | |
|——| |———|COMM_|—
| | |
| | REQ |
| | | %Q0100
| %R0016—|IN FT|———————————————————————————————————————————————————————————( )—
| | |
| | |
| CONST —|SYSID|
| 0102 | |
| | |
| CONST —|TASK |
| 00001 |_____|
|
Note
For systems that do not have expansion racks, the SYSID must be zero for the
main rack.