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Communication Protocol 

7

 

invalid command. 

command not recognized 

parity error. 

parity error detected 

not a number. 

attempt to write symbols 
for numerical parameter 

point error. 

value resolution greater 
than parameter’s one 

out of range. 

value out of range 

read only. 

parameter is read-only 

can't save. 

problem with writing 
in non-volatile memory 

Other device responses 

 

BCOT751 responses in case 
of incorrect protocol use 
are given on the left. 

 

When 

Error Info 

value is 

-1

the device substitutes  
any command for 

error

 

reading (see 'Errors'). 

Reset 

To reset the device,  
send command 

reset

Errors 

Value 

Parameters 

Error type 

-1 

all 

incorrect memory  

all 

no error

 

Cell Constant

 

out of range 

Filter Time 

out of range 

Filter Band 

out of range 

Temperature Coefficient 

out of range 

Default Temperature 

out of range 

11 

Hysteresis 

out of range * 

12 

Set Point

 -

 Hysteresis 

under range * 

13 

Set Point

 +

 Hysteresis 

over range * 

21 

Hysteresis 

out of range ** 

22 

Set Point

 -

 Hysteresis 

under range ** 

23 

Set Point

 +

 Hysteresis 

over range ** 

31 

Hold Time On Error 

out of range 

41 

Wire Resistance 

out of range 

* with 

Relay Output Link

 = 

temp

** with 

Relay Output Link

 = 

cond

 

 

Writing in the device 
may incur discrepancies 
in parameter values  
that must be resolved 
before further operation. 

 

To check for an error, 
send command 

error

.

 

 

In case of value 

-1

try resetting by sending 
command 

reset

.  

 

If the problem persists, 
send command 

error

 

to restore the default 
(factory) settings. 

Содержание BCOT751

Страница 1: ...SJ SWEDEN tel 46 0 40 88009 fax 46 0 40 929877 e mail info basi se BCOT751 OPERATION MANUAL Please read this Operation Manual before mounting and operating Save the Manual for future references SMART...

Страница 2: ...n every 35 mm rail conforming to EN50022 Wiring Connect a conductivity cell to terminals 5 and 6 7 and a temperature compensation sensor to terminals 7 6 and 8 Terminals 6 and 7 are internally connect...

Страница 3: ...nctionality is installed see Specifications Changing Point Position value reflects on the real value of all parameters with the conductivity measurement unit E g changing Point Position value from 0 t...

Страница 4: ...Resistance of the connection wires Output Parameters Output Configuration o conf Analog output signal type Analog Output Link o lnk Defines input linked to the analog output Low Limit o lo Input valu...

Страница 5: ...00000 1 cm 5 6 00 00 99 99 3 used for long wire resistance compensation i 0 20 i 4 20 u 0 10 u 2 10 i 0 20 0 20 mA i 4 20 4 20 mA u 0 10 0 10 V u 2 10 2 10 V cond temp cond conductivity input temp tem...

Страница 6: ...ed in frames Each frame consists of 1 or 2 words separated by byte 32 SPACE and ends with bytes 13 CR and 10 LF The first word in the frame denotes the parameter Symbol as taken from Table 1 and the s...

Страница 7: ...all incorrect memory 0 all no error 1 Cell Constant out of range 2 Filter Time out of range 3 Filter Band out of range 4 Temperature Coefficient out of range 5 Default Temperature out of range 11 Hyst...

Страница 8: ...rn off temperature compensation set parameter Temperature Compensation to off t comp off 13 10 Input Filtration Low pass filter This first order filter acts ONLY within a certain band around filter ou...

Страница 9: ...rs Set Point Direction and Hysteresis When an error is detected the relay output deactivates and the analog output is held for a certain time defined by the parameter Hold Time On Error The analog out...

Страница 10: ...const x xxxxxx 13 10 Calibration by adjusting measured value To use this method set parameter Calibration Mode to c cal cal c cal 13 10 To take temperature compensation into account select the desire...

Страница 11: ...together with household waste material If disposed of within European Union this product should be treated and recycled in accordance with the laws of your jurisdiction implementing Directive 2012 19...

Страница 12: ...ng IP20 Warranty and Support article number serial number manufacturing date QC check mark passed stamp BASI Instrument AB p o box 53 SE 275 06 VOLLSJ SWEDEN tel 46 0 40 88009 fax 46 0 40 929877 e mai...

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