Teledyne HASTINGS 2002, Instruction Manual, Page: 30 / 49

page 30
If the RS-485 address is unknown, the ‘UNIVERSAL ADDRESS’ [*00] may be used to set the
address to a known value, e.g. [*00A=35<CR>] will change the RS-485 address to 35.
Caution: Since all units will respond to the ‘UNIVERSAL ADDRESS’, make sure that only the
unit to be modified is connected to the RS-485 Bus. If more than one unit is connected, this will
result in all of the units being set to the same address.
The value entered for the Turnaround Delay is used to modify an internal timer which normally
runs at ~8 millisecond, e.g. [*{aa}T=10<CR>] will set the delay to ~80 milliseconds.
If the command syntax is not met, or if the number is out or range, the HPM-2002 will respond
with the ASCII codes for <bell>?<CR>, and the command will be ignored.
Calibration Adjustment Commands
Command Description Format Valid Range:
Set Full Scale Calibration CF={m.d}E{e}<CR> 5.12e+2 to 1.023e+3 Torr
6.83e+2 to 1.365e+3 mbar
6.83e+4 to 1.365e+5 Pascal
Set Midpoint Calibration CM={m.d}E{e}<CR> 4.00e+0 to 7.999e+0 Torr
5.34e+0 to 1.066e+1 mbar
5.34e+2 to 1.066e+3 Pascal
Notes:
The calibration adjustment data may also be entered as a decimal number, e.g.
[CF=760.99<CR>] will be same as entering [CF=7.6099E+2<CR>] .
When inputting calibration adjustment data, it must be within the valid range of the presently
selected Unit of Measurement (i.e. Torr, mbar or Pascal). The data is checked to be valid before
being accepted.
If the command syntax is not met, or if the number is out or range, the HPM-2002 will respond
with the ASCII codes for <bell>?<CR>, and the command will be ignored.
Reset / Restore Commands
Command Description Format Notes :
Escape <Esc> Reset Command Buffer (ignore prior
input)
Software reset
/R<CR> Reinitialize Software
Restore Factory Defaults /#<CR> Restore Calibration Register Default Values
Set Zero /0 <CR> Store Present Pressure As Instrument
ZERO (if Piezo <32 Torr & Pirani <50 mTorr)
Force Zero /!<CR> Override Limit Checks And Store Present
Pressure As Instrument ZERO