TOHO ELECTRONICS TTX-700 - Manual (Page 4)

1. Before using the product
1.1 On this operation manual
This is an operation manual regarding communications with a TTX-700 (hereinafter referred to as
"this product").
1.2 What can be done with communications
With this product, users can write and read items specified in "10. Table of identifiers," such as
"reconfiguring, starting, or stopping items that are operable with the front keys" and "reading
information displayable on the display."
However, reading and writing with ordinary commands are performed with regarding to the RAM in
this product. Written data can be turned back into the values before the writing (the values stored on
the EEPROM) by turning power off and on again. To store the written data on the EEPROM of this
product, execute a store request message. (See "3.6. Communications precautions.")
Settings regarding options not added and other unnecessary settings cannot be read or written.
1.3 Positioning communications (priority ranking)
Data and parameters in this product can be changed with keys while in operation in the
communications mode.
While this product is in operation in the RO (read-only) mode, no data or parameter setting can be
changed by communications. (Provided that communications modes can be changed.)
1.4 Setting before communications
Before performing communications, this product must be set.
This product is compatible with the TOHO communications protocol and the MODBUS
communications (RTU, ASCII).
Select a protocol with the protocol setting (
) on communications 1/2 setting ( ). For the
TOHO communications protocol, see "2. Settings regarding TOHO communications." For the
MODBUS communications protocol, see "5. Settings regarding MODBUS communications."
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