Samwontech TEMI 2500 - Page 13

SAMWONTECH
1st Edition of TEMI2000_Series IM : Dec. 15. 2008 Page 11 / 58
5.4 RSD Command
RSD Command is used to read data in a part of D-Register by consecutive address in sequence.
▣ Request Message Frame
Bytes 1 2 3 1 2 1 4 2 1 1
Frame STX Address RSD ,
Count
Number
, D-Reg. SUM CR LF
▣ Response Message Frame
Bytes 1 2 3 1 2 1 4 1 …
Frame STX Address RSD , OK , Data - 1 , …
1 4 2 1 1
, Data - n SUM CR LF
▪ Count Number : 1 ~ 64
▪ Data : Hexa-decimal 16bit string 4 character with no decimal point
◈
Example
To read the D-Register FROM D0001 (TEMP.PV) TO D0002 (TEMP.SP)
- Request : [stx]01RSD,02,0001[cr][lf]
- Request (with CheckSum) : [stx]01RSD,02,0001C5[cr][lf]
([stx] = 0x02, [cr] = 0x0d, [lf] = 0x0a)
Response data will be same as below, when 50.0 of D0001 (TEMP.PV) and 30.0 of D0002 (TEMP.SP)
- Response : [stx]01RSD,OK,01F4,012C[cr][lf]
- Response (with CheckSum) : [stx]01RSD,OK,01F4,012C19[cr][lf]
※ Converting procedure 4digits hexadecimal response to decimal value.
① Radix conversion (Decimalize) : 01F4(hexadecimal) → 500(decimal)
② Multiply factor (decimal point) : 500 * 0.1 → 50.0