Modbus/Tcp Protocol - Ditel DN109/NB Manuel Technique

TECHNICAL MANUAL
LARGE DISPLAYS DN109/NB - DN119/NB - DN189/NB
CHAPTER 24
15. Allows to select an end of frame. It is used as an enabler; the display will only show the
data to which the end of the chosen frame is added. Selecting NONE disables this
feature.
End block
<CR> 0Dh
<LF> 0Ah
<CR LF> 0Dh 0Ah
<LF CR> 0Ah 0Dh
< * CR> 2Ah 0Dh
16. Allows to select the display response. This response will be sent whenever the display
receives data, regardless of whether it is viewed.
Available answers are:
Reply
NONE
@ AH AL ED 0 * <CR>
06h ENDBLOCK
17. Sets the time to wait (in seconds) for a new request before the display sets "-" to all
characters. The value can be any integer multiple of 10 between 0 and 2550 (inclusive).
In case of value 0, the display does not establish any waiting time, the last data will be
shown indefinitely.
18. When modifying any parameter, the button is enabled to send the new information to the
display.

MODBUS/TCP Protocol

End block not required.
To use the MODBUS/TCP protocol, the communication port must be properly configured
(See section 24.1).
MODBUS Functions
The MODBUS functions accepted by the displays are shown in the following table:
Tipe
Data
access
ETHERNET COMMUNICATION
The available frame endings are as follows:
NONE
02h
03h
04h
Table 55: ASCII end blocks.
ACK
06h
40h Direc A Direc.B 45h 44h 30h 2Ah 0Dh
Table 56: Answers for ASCII protocol
Access to internal bits
and Coils
16-bits access to
internal registers
Table 57: MODBUS Functions accepted.
Value 02h
Value 03h
Value 04h
0Dh
0Ah
0Dh 0Ah
0Ah 0Dh
Host-Link Omron 2Ah 0Dh
No answer
Acknowledgment of receipt
Value 06h
06h Block end
Name
Read Coils
Write Single Coil
Write Multiple Coils
Read Holding Registers
Write Single Register
Write Multiple Registers
24-2
Code
01h
05h
0Fh
03h
06h
10h