Specifications

CHAPTER 4
OPERATION
4-13
DT-203X, DT-105X and DT-110X display series
4.4.2.8. CRC.
2 Bytes.
It is the result from CRC according to J-BUS/MODBUS protocol.The CRC is made of all
characters except the resulting CRC using the following process.
1. Assign the value FFFFh to CRC register.
2. Make an exclusive OR between the CRC register and the first byte, store the result in
CRC register.
3. Right rotation of CRC register. Copy LSB to carry bit and set MSB to 0.
4. If Carry bit is equal to 1 make an exclusive OR between CRC register and the value
A001h, store the result in CRC register.
5. Repeat point 3 and 4 8 times.
6. Repeat points 2 to 5 until all the bytes are complete.
7. Assign the result to CRC high and CRC low.
4.4.2.9. Structure of data block.
4.4.2.9.1. Direct control.
Data to be sent must be set in ASCII code and will be displayed on the programmed line
on byte 3 (4 least significant bits Line number / control types).
The control codes to be sent are:
 0Ah: 0Ah control codes force a change of line on multilinear displays. If the new text is
shorter than the previous one, the characters remaining from the previous message will
not be deleted.
 0Ch: 0Ch control codes force a change of line on multilinear displays. If the new text is
shorter than the previous one, the characters remaining from the previous message will
be deleted.
Example: Present text «ABCDEFGHIJ»
Send text «123456» + code 0Ah. Final text «123456GHIJ»
Send text «123456» + code 0Ch. Final text «123456»
 00h 08h: It makes the characters flash
 00h 09h: It makes the characters stop flashing.
 00h 15h: Displaying the date.
 00h 16h: Displaying time (hours and minutes)
 00h 18h: Displaying time (hours, minutes and seconds).
 00h 1Ch: Time set.
 00h B6h: Up arrow.
 00h B7h: Down arrow.
 00h B8h: Short right arrow.
 00h B9h: Short left arrow.
 BCh BAh: Long right arrow.
 BBh BDh: Long left arrow
Format: ddmmaa_hhmm (in ASCII characters)
Example: Set date on 18/04/2000 and at 10:34
Display address = 2.
Data to send:
02h 10h 00h 01h 00h 06h 0Ch 1Ch 31h 38h 30h 34h 30h 30h 20h 31h 30h 33h 34h CRC