Huber KISS 1 Series, Operation Manual

Page: 46 / 56

Interfaces and data communication
OPERATION MANUAL Chapter 6
KISS Immersion Circulator
V1.2.0en/11.12.20//0.3.1
46
Byte ASCII Hex Description
9. Byte
a:
0 / 1
30h / 31h
Alarm status
Meaning of the characters in the response string:
“0” (30h) = No alarm;
“1” (31h) = Any number other than “0” is an alarm
10. Byte t
tttt /
****
Query or set the setpoint
Meaning of the characters in the send string:
Setpoint with 16-bit resolution (2 bytes, thus 4 ASCII characters)
“tttt” = 0000h (0.00 °C) to 7FFFh (327.67 °C)
FFFFh (- 0.01 °C) to 8000h ( - 327.68 °C)
0190h correspon ds to +4 °C, (30h, 31h, 39h, 30h)
FE70h corresponds to - 4 °C (46h, 45h, 37h, 30h)
“****” (2Ah, 2Ah, 2Ah, 2Ah) = no change to the setpoint, setpoint is
only queried
11. Byte t
12. Byte t
13. Byte t
14. Byte i
iiii
Internal actual value
Same format as setpoint
15. Byte i
16. Byte i
17. Byte i
18. Byte e
eeee
External actual value
Same format as setpoint, depends on device configuration
19. Byte e
20. Byte e
21. Byte e
22. Byte p Checksum
Checksum
It is generated from bytes 1 to 21.
23. Byte p Checksum
24. Byte \r 0Dh End character CR
Example:
The temperature control mode and the alarm status should remain unchanged (each “*”) and a
setpoint of - 4.00 °C (FE70) is to be set.
The master sends: [M01G0D**FE700A\r
The slave responds (for example): [S01G15O0FE7009A4C504E7\r
The temperature control unit is turned off (“O”), there is no alarm ("0"), the setpoint of - 4.00 °C was
set (FE70), the actual value is 24.68 °C (09A4), “C504” corresponds to - 151.00 °C and indic ates that
no external temperature sensor is installed or connected.
6.3.2 PP commands
There is another set of commands to make the communication with the temperature control unit
easy. The PP commands can be used, e.g. in conjunction with simple terminal programs. The calcula-
tion of a checksum has therefore been omitted and the commands kept very simple. Each command
is terminated with Carriage Return ('\r', 0Dh) and Linefeed ('\n', 0Ah). There are read and write
commands. Each correct command causes a response from the temperature control unit. Tempera-
ture and setpoint values are represented by a five-digit number, which corresponds to the tempera-
ture being expressed in hundredths of a degree (without decimal point).