LG Electronics 120S Dedicated Protocol Communication, Communication Functions, Introduction

Chapter 8 Communication Functions

Chapter 8. Communication Functions

8.1Dedicated Protocol Communication

8.1.1Introduction

MASTER-K120S’s built-in Cnet communication uses only MASTER-K120S main unit for a dedicated communication. That is, it doesn’t need a separate Cnet I/F module to facilitate the user-intended communication system by utilizing reading or writing of any area in CPU, and monitoring function.

MASTER-K120S main unit serves as follows:

•Individual/continuous reading of device

•Individual/continuous writing of device

•Reading CPU status

•Monitor devices registration

•Executing monitoring

•1:1 connection (link between MASTER-K’s) system configuration (MASTER-K120S main unit : RS-232C)

Remark

MASTER-K120S built-in communication function supports Cnet communication without any separate Cnet I/F module. It must be used under the following instructions.

1)Channel 0 of MASTER-K120S main unit supports 1:1 communication only. For 1:N system having master-slave Format, use RS-485 communication in channel 1 or MASTER-K120S main unit with G7L-CUEC module connected. G7L-CUEC module supports RS-422/485 protocol.

2)RS-232C communication cable for MASTER-K120S main unit is different from RS-232C cable for KGLWIN in pin arrangement and from the cable for Cnet I/F module, too. The cable can’t be used without any treatment. For the detailed wiring method, refer to 8.1.2.

It’s possible to set baud rate type and station No. in KGLWIN.

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