Ditel DN109/NB Manual Tecnico página 174

TECHNICAL MANUAL
LARGE DISPLAYS DN109/NB - DN119/NB - DN189/NB - DN129/NB
CHAPTER 24
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Write Single Register: It is used to assign the value to only one register.
The structure of this function is presented below:
Request
Function Code
Register Address
Register value
Answer
Function Code
Number of bytes used
Register Value
Error
Error Code
Exception code
*Depends on the type of data you want to write:
- 2 bytes (0002h): Word type value (with or without sign).
- 4 bytes (0004h): Word type value and reading of color and luminosity
information.
- 6 bytes (0006h): Double Word type value with decimal.
- 8 bytes (0008h): Double Word type value and reading of color and luminosity
information.
-10 bytes (000Ah): Full message reading to a 10 digits display.
Example:
We want to write in one register with address "2" the value "04D2h" to display "1234". To do this,
the following frames are sent and received:
ETHERNET COMMUNICATION
1 Byte
2 Bytes
2 Bytes
1 Byte
2 Bytes
2 Bytes
1 Byte
1 Byte
Table 65: "Write Single Register" function structure.
06h
0000h to 0011h
0000h to FFFFh
06h
0001h to 000Ah*
0000h to FFFFh
86h
01 or 02 or 03 or 04
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