TECHNICAL MANUAL
LARGE DISPLAYS DN109/NB - DN119/NB - DN189/NB - DN129/NB
CHAPTER 24
ETHERNET COMMUNICATION
24-8
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Write Multiple Registers:
It is used to assign the value to several registers
simultaneously.
The structure of this function is presented below:
Request
Function Code
1 Byte
10h
Start Address
2 Bytes
0000h to 0011h
Number of registers
2 Bytes
0001h to 0005h
Number of bytes used
1 Byte
2 x N (N = # registers)
Register Value
N x 2 Byte
XX…XX
Answer
Function Code
1 Byte
10h
Start Address
2 Bytes
0000h to 0011h
Number of registers
2 Bytes
0001h to 0005h
Error
Error Code
1 Byte
90h
Exception Code
1 Byte
01 or 02 or 03 or 04
Table 66: "Write Multiple Registers" function structure.
Example:
You want to write in 2 registers, with initial
address “0”. For the display to show the word
“HELLO”, it is sent to the registers “48h 4Fh 4Ch 41h”. To do this, the following frames are sent
and received:
