Siemens RS-485 ユーザーズマニュアル

CC1A7865.1en
31.10.2002

The RS-485 interface is used for integrating RWF40… controllers into data networks
via MOD bus protocol.

Application examples:

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Process visualization

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Plant control

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Reporting

Communication between a PC (master) and a device (slave) via MOD bus is based on
the master-slave principle in the form of data query / instruction – reply.

A master computer controls the exchange of data and can address up to 99 controllers
via device addresses (slaves).