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Block check characters
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The block check characters have two bytes. The ASCII values of seven bits from the bit
following the transmission control characters indicating the beginning of the message to the
transmission control characters indicating the end of the message are added in binary. The
value of low-order eight bits is expressed in hexadecimal and is converted into the ASCII code.
The block check characters indicate the ASCII code.
<Example 2> Message in example 1
<Example 3> Selecting PRESET 1 of the slave unit having the system address of 1 and turning on
the main output key (using multi-commands)
<Example 4> When signals for turning on the MAIN OUTPUT key are sent to all slave units.
<Precautions>
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A syntax error occurs if a message is not constructed properly. The slave units ignore that message.
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If a message contains information exceeding the rated voltage and current of a slave unit, the
slave unit is set to the maximum rating.
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Make sure that the slave unit sends no message to the master unit before sending a message
from the master unit to the slave unit.
