LG Electronics 120S user manual Example

Chapter 8 Communication Functions

4) Example

MASTER-K120S main unit	MASTER-K120S main unit
(Master : Station No. 0) G7E-DR10A	(Slave : Station No. 31)

1:1 built-in communication between MASTER-K120S

•Device M000 is increased by program per 1 second.

•Writing M000 to output area P004 of slave

•Reading slave’s output area P004

•Writing it to master’s output area P009

The following example uses the above diagram to explain the operation of MASTER-K120S main unit.

•The data of the master MASTER-K120S main unit is increased by INCP instruction and sent to be written on the output contact point P004 of the slave MASTER-K120S main unit. And in return, the master MASTER-K120S main unit reads the data that is written on the output contact point of the slave MASTER-K120S to write them on the output contact point of extended digital input/output module, G7E-DR10A.

(1)Setting communication parameter of the master station and its program ① Work on the master station 0.

② Open a new project file and a new program for the master station.

③ Double click parameter item for parameter settings. If you click the Comm. button in parameter window in KGLWIN, you can see the following window of the communication parameter.

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