Specifications

4-12 OPERATION CHAPTER 4
DT-203X, DT-105X and DT-110X display series
4.4.2.4. First.
1 Byte.
Direct control:
The position of the first character is sent to the display. Position 1 is the one placed on
the left side of the display. The character placed on the left of the first character should not be
modified.
Position =1: Only the new text which has been sent is displayed.
Position >1: The current text is modified and it begins with the position sent. If the
characters just sent modify other characters belonging to the previous message, new characters
make the previous message longer. If the amount of characters sent is lower than the amount of
characters remaining from the first modified character to the end of the previous message, there
are 2 possibilities:
A) The sent text ends with 0Dh code: What remains from the previous message is not
deleted and it is not modified.
B) The sent text does not end with 0Dh code. What remains from the previous message
is not deleted and it is not modified.
Example 1: present text: «ABCDEFGHIJKLMN»
Position of the first character: 4
Text sent: «1234»
Final text: «ABCD1234HIJKLMN»
Example 2: present text: «ABCDEFGHIJKLMN»
Position of the first character: 4
Text sent: «1234+ (0DH) = ASCII: 31 32 33 34 OD
Final text: «ABC1234»
Code control: This byte is not used on code control.
4.4.2.5. Number of words.
2 Bytes.
It is the number of words sent on network. It is to monitor the block of information
received.
4.4.2.6. Number of characters.
1 Byte.
It is the number of characters of the message. It has to be an even number.
4.4.2.7. Data.
Minimum 4 Bytes.
See 4.4.2.9 “Structure of data block.”