37
The instrument response : 40,30,31,52,52,D1
，
D2,
………
,D55
，
D56,CRH,CRL,0D(64 bytes)
40 : the start byte
30 31:ID
52 52 : the fix data
D1
～
D56
：
the parameter of sending (8 double byte,12 byte, total 28 bytes)
CRCH
，
CRCL: CRC
0D: the end byte
4
、
Notice for programming the communication program
If the instrument receives the data with the start byte is 40 and the count of sequence data over 16
bytes and did not find the 0D then the data is invalid. The instrument will not do any response.
If the sequence data is not between 00H to 0FH, the sequence data is invalid. The instrument will not
do any response. But the other errors, ex: the wrong instruction, the wrong address, the wrong parameter
counts, the wrong CRC and so on, the instrument will response the wrong information.
All parameters, please see the following table, some parameters are include decimal.
para
TST1
TST2
SP1U
SP2U
CURL
CURH
POFS
HOR
AAA
FUNC
decimal
1
1
0/2
0/2
0/2
0/2
0/2
0
0
0
para
R3OP
TOFS
SEC
SP1D
SP1T
SP2D
SP2T
NB
BT
CONF
decimal
0
1
0
0/2
0
0/2
0
0
0
0
The PC display the reading values should be include the decimal.
TOFS is the correct value of temperature, the setting range is 0
～
200, the display range is -100
～
100,
so the PC should be subtract 100 and display with sign.
1) FUNC is the display mode of instrument : 0=mV; 1=ORP; 2=pH
2) R30P is the mode of relay 3: 0
＝
NOR
；
1
＝
SP1
；
2
＝
SP2
；
3
＝
ALL
；
4
＝
CAL
；
5
＝
CLE
。
3) AAA is the reserve parameters
4) CONF is a byte parameter, the define is following,
Bit 7 : temperature compensation : 1=automation 2=manual
Bit 6: current output, 1
＝
4
～
20mA
；
0
＝
0
～
20mA
；
Bit 5: SP1
，
1
＝
HI
；
0
＝
LO
；
Bit 4: SP2
，
1
＝
HI
；
0
＝
LO
；
Bit 3 : control mode , 1
＝
PLC
；
0
＝
Lit
；
Bit 2 : electrode selection , 1
＝
ANTI
；
0
＝
GLAS
；
Bit 1: buffer, 1
＝
NST
；
0
＝
USA;
Bit 0 :reserve
