TOHO ELECTRONICS TTM-10L - Manual (Page 3)

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1. Before using the product
1.1 On this operation manual
This is an operation manual regarding communications with a TTM-10L Series (hereinafter referred
to as "this product").
1.2 Conditions for communications
The communications function of this product is optionally specified. For that reason, you should
specify a communications option (RS-485 or RS-232C) in purchasing this product.
1.3 What can be done with communications
With this product, users can write and read items specified in "7. Table of identifiers (codes)," 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 "Communications precautions" in chapter 3.6.)
Settings regarding options not added and other unnecessary settings cannot be read or written.
1.4 Positioning communications (priority ranking)
Data and parameters in this product can be changed with keys while in operation in the
communications mode.
(Note that any modification related to communications is not permitted.)
While this product is in operation without use of the communications function, readout or setting
change of the data or parameters cannot be executed through communications.
Switchover of the communications type cannot be key-locked.
1.5 Setting before communications
Before performing communications, this product must be set. See "2. Settings regarding
communications."