TOHO ELECTRONICS TTM200 - Manual (Page 10)

10
3.5 Description of codes
 The codes from ① STX, ② address to ⑩ ERR type as indicated below are expressed in
ASCII codes.
 For the ASCII codes, see "11. Table of ASCII codes."
 For conversion to ASCII codes, see "4. Examples of TOHO communications."
① STX
This code is needed for the receiver to detect the top of the message. It is affixed to the top
of a character string to be sent.
② Address
This is the address of the party (this product) with whom a high-level computer
communicates. The address in the response message from this product indicates the sender
of the response message.
③ Contents requested
Enter a code R / W. / L / B
R: to read data from this product
W: to write or store data in this product
L: to read blind setting from this product
B: to write or store blind setting in this produc
④ Identifier
An identifier is a classification code (identifier) for data to be read or written and expressed
in a three-digit alphanumerical ASCII code. See "10. Table of identifiers (codes)."
⑤ Numerical data
In writing mode, you can write 5 or 6 digits of numerical data. In reading, you can set this
product to 5 or 6 digits of numerical data. Following are the conditions for switchover
between 5 and 6 digits.
Negative data: The "-" (minus) sign is in a single digit at the largest digit.
Position of the decimal point: 5-digit data does not include a decimal point.
Example: The table below indicates the significances of 5-digit numerical data -9999
Example
Significance of the
value
Data (PV), etc, whose
decimal point can be
shifted
decimal point setting (DP) is 0 -9999
decimal point setting (DP) is 0.0 -999.9
decimal point setting (DP) is 0.00 -99.99
decimal point setting (DP) is 0.000 -9.999
Decimal point setting (DP) is
0.0000
-0.9999
When the character data is “ INP”.
Example: The table below indicates the significances of 6-digit numerical data -10000
設定 数値の意味
Data (PV), etc, whose
decimal point can be
shifted
decimal point setting (DP) is 0 -10000
decimal point setting (DP) is 0.0 -1000.0
decimal point setting (DP) is 0.00 -100.00
decimal point setting (DP) is 0.000 -10.000
Decimal point setting (DP) is
0.0000
-1.0000