Ditel DN109/NB Manuel Technique page 175

TECHNICAL MANUAL
LARGE DISPLAYS DN109/NB - DN119/NB - DN189/NB
CHAPTER 24
Fig. 101: Message in MODBUS/TCP to send the value "-3270".
These frames show the sending and response explained in the previous section.
24.2.2.4 Register 14.
It is important that in this case the starting address is 14.
This register is used identically to the previous one, but it is used for numeric values of
type double WORD without sign. The range is from 0 to 4,294,967,295. Decimal point, color, and
lightness are handled identically. Table 23 can be used interchangeably for this case.
For example, the same frame is sent as in the register 10 example, but the starting
address is changed to 14. In this case, 4.294.964.026 is displayed, if the device has 10 digits or
more. Otherwise, the display shows "OvL".
24.2.2.5 Register 00.
It is used to write text on the display (in ASCII characters). Keep in mind that when writing
to a 7-segment led, only certain values can be set (See
available, starting at address 0. Each register can contain two ASCII characters.
REGISTER 0
Byte 1 Byte 2
<XXh> <XXh>
ASCII 1 ASCII 2
Example:
To facilitate the sending of information, the
You want to display the text "E 523" to indicate an error in an industrial process. The
following content must be sent via Modbus.
Byte 1
45h
"E"
ETHERNET COMMUNICATION
REGISTER 1
Byte 3 Byte 4
<XXh> <XXh>
ASCII 3 ASCII 4
Table 69: Summary of values to use register 00.
REGISTER 0 REGISTER 1
Byte 2 Byte 3
20h 35h
" " "5"
Table 70: Example of the values to display "E 523".
section 23). For this, 10 registers are
········· REGISTER N
········· Byte 2*N+1
········· <XXh>
········· ASCII 2*N+1 ASCII 2*N+2
function Modbus 10h
REGISTER 2
Byte 4 Byte 5 Byte 6
32h 33h 00h
"2" "3"
24-11
Byte 2*N+2
<XXh>
is used.