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1.
Before Using the Product
1.1 About the Operation Manual
This manual explains the communication function of TTM-00BW (hereinafter referred to as "Product").
1.2 Requirements for Communication
The communication function of the product is optional. Therefore, you need to specify the communication
option (RS-485) upon purchase.
1.3 Things the Communication Function Can Do
This function allows the user to write and read the items of this product that are described in "9.
List of Identifiers,"
such as "To change, start, or stop items that can be operated through front keys" and "To read the
information that can be displayed on the display section."
However, since the RAM of this product is used during the reading/writing of data through
ordinary command, data that was written will be replaced by the previous data (data that is saved
in the EEPROM) if the power is turned OFF and then turned ON.
To save the written data into the EEPROM of this product, execute the save request message.
(See 3.6, 6.6, and 6.11,
“
Things to Be Noted during the Communication
.”
)
Furthermore, unnecessary setting items, such as items that are related to the unattached option, will
not be read and written.
1.4 Position (Priority) of Communication
This product allows the user to change data and parameters through the key even during the operation
under communication mode.
Change of settings of data and parameters via communication will be disabled while the product is operated
under RO (Read Only) (provided, however, that the switching of communication mode is possible).
1.5 Settings to Be Made Prior to the Communication
Several settings need to be made to this product in order for it to perform a communication function.
See "2. Setting about TOHO Communication" or "5. Setting about MODBUS Communication."
