Omega PCL340 - Manual (Page 38)

ST_DEAD?
Returns deadband of the switch in the current pressure units.
VAL?
Returns the value of any measurement taking place on the upper
and lower display. For example, if the upper display is measuring
5mA, and the lower display is measuring 10V, then VAL? will
return:
5.000000E-03, A, 1.000000E+01, V
ZERO_MEAS
Zeroes the attached pressure module. Enter the zeroing value in
PSI after the command when zeroing an absolute pressure
module.
ZERO_MEAS?
Returns the zero offset or the reference value for absolute
pressure modules.
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