Model 2302-V001
RESISTOMAT
®
Page 37
Brief guide
Operation
Calibration
Test and offset
instructions
RS232 data
output
Introduction &
applications
Description of functions
Accessories and Circuit diagram
RS232 data
output
1 -> The measurement value is new and has not been read in previously.
0 -> The measurement value has been read in previously.
This instruction is meant for quick transmission of measurement values. At a baud rate of
9600, about 15 measurement values can be read in per second. The transmission format
is
fixed and cannot be changed with the set-format instruction.
Example:
Master transmits:"Slave at address 480, send me your latest
measurement value."
C
D
48pvC
E
<EOT>48pv<ENQ>
Slave responds:
"Message understood. The measurement value is 1.237 Ohms
and has not been read in previously."
C
B
01.237 OHM 1C
C
<B>
<STX><CR><LF> 01.237 OHM 1<ETX><B>
C
F
<ACK>
Leading zeros are not suppressed during transmission of the measurement value. 5 digits
are always transmitted, including the decimal point, even there are no decimal places.
sf
(stands for: set parameter format, W3 instruction)
The addressed device is to transfer parameter/ measurement values ( sm instruction ) in
a specific format to the controller.
3-parameter instruction; the parameters must be separated by at least one blank.
Par.-No.
Meaning
Value range
1
Parameter number
>= 0
2
Format number
>= 0
3
Unit code
>0 : Send unit
0 : Do not send unit
The format can be stored in the EEPROM using the se instruction (store eeprom )
and is used whenever the device is activated subsequently. The sf and se instructions
are executed in that order here.
