INFICON Cube CDGsci (RS232C) - Manual (Page 12)

12
tira90e1 (2014-01) RS232C.cp
Parameter name Data type Byte No. 1 Byte No. 2 Byte No. 3 Comment
Reset uint8 / W 0x40 0x00 0x00 Power reset: Starts continuous pressure output
ResetFactory uint8 / W 0x40 0x01 0x00 Factory reset: Sets factory configuration
ZeroAdjust uint8 / W 0x40 0x02 – Starts zero offset adjustment
W = Write
<data_value>×a
Setpoint_level xy =
b
× F.S.R._Mantisse×10
(F.S.R._Exp)
Parameter
1)
Description
Setpoint_level xy Setpoint threshold in the selected pressure unit.
1) Further parameter →  13, table "Parameter"
• Minimum value lower switching threshold = 0 ; negative values are not
admissible.
• Maximum value lower switching threshold = F.S.R. – 1 % hysteresis.
Zero_Adjust_Value contains the zero pressure offset value required for zeroing
(writable and readable).
• Automatic zero_adjust function via key or command (→ table "Variables for
bytes No. 2 and 3 (special services)").
• Base-Pressure-Adjust for adjusting a defined zero offset, e.g. if the required
final pressure as indicated in the operating manual is not reached.
The Zero_Adjust_Value consists of the high and low byte and has to be converted
with the "Pressure value" formula (
→  5).
<data_value>×a
Zero_Adjust_Value =
b
×F.S.R._Mantisse×10
(F.S.R._Exp)
Parameter
1)
Description
Zero_Adjust_Value Zero pressure offset in the selected pressure unit
(
→  13, table "Parameter").
1) Further parameter →  13, table "Parameter"
Maximal remaining offset value. The Zero_Adjust can only be executed within this
value.
Variables for bytes No. 2 and 3
(special services)
Description of variables
Setpoint_level xy
Zero_Adjust_Value
Remaining_Zero