Flintec FT-15D - Manual (Page 46)

FT-15(D) Technical Manual, Rev. 1.02 August 2010 Page 46 of 52
Error Check Calculating:
CSUM = 0 – (Slave_Add + Function + … + Last_data)
(STX and CSUM are neglected while calculating CSUM)
Tool for counting:
0 1 2 3 4 5 6 7 8 9 A B C D E F
Example:
@|01|10|0008|0001|02||0006|DE|<Cr>
To get the check sum (here FA) you have to sum following numbers first:
01+10+00+08+00+01+02+00+06 = 22
Now you have to subtracte 22 from 00:
00 - 22 = DE
(Calculation examples: 00 – 10 = F0 ; 00 – 11 = EF)
Command
Function
(Read /
Write)
Address
register
Quantity
Address
register
Quantity
Data
register
Data Definition
Display value 03 (R) 0000 0002 -- ----- Current display value; gross or net
Transfer the replied status data (hex, 4 digits) into
binary (up to 16 digits) and compare the binary
digits with the following table.
Digit Definition
D0
Busy 1 – System Busy
D1 Data ok
1 – Data ok
0 – Error
D2 Motion 1 – Weight is not stable
D3 0 NA
D4 0 NA
D5 Output 1
D6 Output 2
D7 Output 3
1 – Output active
D8 Input 1
D9 Input 2
D10 Input 3
1 – Input active
D11 0 NA
D12 0 NA
0 No
Errors
1 ADC out of range
2 ADC over range
3 ADC under range
4 System fault
Status 03 (R) 0002 0001 -- -----
D13
D14
D15
Error Code;
transfer
D13, D14,
D15
(binary) to
decimal and
compare to
code
5
FT is not in
weighing mode
0003 0002 -- ---- Reserved
Gross Weight 03 (R) 0005 0002 -- ---- Current gross weight
Status 03 (R) 0007 0001 -- ---- Same as address 0002
---- None Control 10 (W) 0008 0001 02
0001 Zero
Examples:
The commands will be used for an indicator which instrument address is set to 1.
Reading weight data:
@,01,03,00,00,00,02,FA<Cr>
Reading status data: @,01,03,00,02,00,01,F9<Cr>
Reading Tare data: @,01,03,00,03,00,02,F7<Cr>
Zeroing: @,01,10,00,08,00,01,02,00,01,E3,<Cr>