User Manual
OB-15/2 BB
28
10.
RS-232
COMMUNICATION
PROTOCOL
COM port settings:
-
9600 Baud
-
No parity
-
8 Data bit
-
1 Stop bit
Connector pins info:
-
3
= TXD RS232 output from controller
-
7
= GND
-
11
= RXD RS232 input to controller
All commands must be written in capital letters and identical as written in this description!
After the receipt of the command (START, STOP, SETTEMP) the data is immediately written in the eeprom.
This way the controller will always return to the last settings in case of a power failure.
No.
Command:
Action:
1.
STOP <LF>
Operation of the bath stopped. Equal to STOP on the controller.
2.
START<LF>
Operation of the bath activated. Equal to the START on the
controller.
3.
SETTEMP= 37.0<LF>
Set temperature with single decimal
4.
SETTEMP?<LF>
Request of set temperature. Will return current set
temperature.
SETTEMP=37.000<CF><LF>
5.
TXD<LF>
Request of set and current temperature. Will return current set
temperature and current measured temperature.
Tm=37.001 Ts=37.0<CR<<LF>
6.
KP=120<LF>
Set P component in PID controller
7.
KP?<LF>
Request of current P component. Will return
KP=120<CR><LF>
8.
TI=600<LF>
Set I component in PID controller
9.
TI?<LF>
Request of current I component. Will return
TI=600<CR><LF>
10.
TD=0<LF>
Set D component in PID controller
11.
TD?<LF>
Request of current D component. Will return
TD=0<CF><LF>
12.
TRIG=10<LF>
Automatic RS232 output period 10 seconds. 0 seconds
automatic output disabled.
Will output:
10.06.3 Tm=37.001 Ts=37.0 P=75WD=0<CR><LF>
Usable with combination to dot printer EPSON LX-300
13.
TRIG?<LF>
Request of current output period. Will return
TRIG=10<CR><LF>
