Lakeshore 335 - Htrset; HTRSET? Heater Setup Query; HTRST? Heater Status Query; Ieee

116 cHAPTER 6: Computer Interface Operation
Model 335 Temperature Controller
HTRSET Heater Setup Command
Input HTRSET <output>,<type>,<heater resistance>,<max cur-
rent>,<max user current>,<current/power>[term]
Format n,n,n,n,+n.nnn,n
<output> Specifies which heater output to configure: 1 or 2.
<type> Output type (Output 2 only): 0=Current, 1=Voltage
<htr resistance> Heater Resistance Setting: 1 = 25 ), 2 = 50 ) .
<max current> Specifies the maximum heater output current:
0 = User Specified, 1 = 0.707 A, 2 = 1 A, 3 = 1.141 A,
4 = 1.732 A
<max user current> Specifies the maximum heater output current if
max current is set to User Specified.
<current/power> Specifies whether the heater output displays in current or
power (current mode only). Valid entries: 1 = current,
2 = power.
Example HTRSET 2,0,1,2,0,1[term] Heater Output 2 uses the current source output, the
25
) heater setting, has a maximum current of 1 A, the maximum user current is set
to 0 A because it is not going to be used since a discrete value has been chosen, and
the heater output will be displayed in units of current.
Remarks Max current will be limited to 1 A on Output 1 if the heater resistance is set to 50 ). If
the heater resistance is set to 25 ) on Output 1, then the max current will be limited
to 1.414 A if Output 2 is in Current mode, or 1.732 A if Output 2 is in Voltage mode. See
section 4.5.1.3 for more information on the max current setting.
HTRSET? Heater Setup Query
Input HTRSET? <output>[term]
Format n
<output> Specifies which heater output to query: 1 or 2.
Returned <type>,<htr resistance>,<max current>,<max user current>,<current/power>[term]
Format n,n,n,+n.nnn,n
HTRST? Heater Status Query
Input HTRST? <output>[term]
Format n
<output> Specifies which heater output to query: 1 or 2.
Returned <error code>[term]
Format n
<error code> Heater error code: 0 = no error, 1 = heater open load, 2 = heater short.
Remarks Error condition is cleared upon querying the heater status, which will also clear the
front panel error message
IEEE IEEE-488 Interface Parameter Command
Input IEEE <address>[term]
Format nn
<address> Specifies the IEEE address: 1–30. (Address 0 and 31 are reserved.)
Example IEEE 4[term] after receipt of the current terminator, the instrument responds to
address 4.