Huber Profibus SE, Technical Bulletin

Page: 10 / 14

Properties of standard variables
TECHNICAL BULLETIN Chapter 6
Profibus® Gateway SE Liability for errors and misprints excluded. V1.2.0en/05.02.16
10
6.7 “vStatus1” – Status of the thermostat
Query current thermostat status.
The returned value is a bit field. The individual bits must be considered independently of each other.
Bit Meaning
Explanation
“1” “0”
0 Temperature control operating mode active Inactive
1 Circulation operating mode active Inactive
2 Refrigerator compressor enabled disabled
3 Temperature control mode “Process control” active Inactive
4 Circulating pump enabled disabled
5 Cooling power available available unavailable
6 Tkeylock active Inactive
7 PID parameter set, temperature controller automatic mode expert mode
8 Error fault occurred no fault
9 Warning
new warning
received
no new warning
10 Mode for presetting the internal temperature active inactive
11 Mode for presetting the external temperature active inactive
12 DV E-grade activated not activated
14 Restart electronics / Power failure (*) no restart restart
15 Freeze protection (not available on all devices) active inactive
(*) This bit is reset to 0 when the control is restarted. If the variable vStatus1 is read for the first time after a
restart, this bit has not been set. In all further reading procedures, this bit will send back a 1. In this way, an
unexpected restart can be recognized.
6.8 “vTmpMode” – Temperature control mode
Set and query the temperature control mode of the thermostat.
0: Temperature control mode internal
1: Temperature control mode process (cascade control)
6.9 “vTmpActive” – Temperature control
Start or stop temperature control of the thermostat or query current status.
0: Temperature control not active
1: Temperature control active
6.10 “vSNRL + vSNRH” – Serial number
Query the serial number of the thermostat.
Because the serial number can have larger values than 65535 but only 2 bytes per variable are available,
the serial number is made up of 2 data words (Low + High) each with 2 bytes into a 4 byte value.
Variable 0x1B (vSNRL) contains the low value bytes, Variable 0x1C (vSNRH) contains the high value bytes.
“vStatus1”