Thermo Fisher Scientific CryoExtra CE8100 Series
Appendix | 71
Controller ASCII Interface
American Standard Code for Information Interchange (ASCII)
is a standard code used in data transmission, in which
128 numerals, letters, symbols and special control codes are
represented by a 7-bit binary number. Below is a chart for
these binary codes.
Controller ASCII Command List
Control Commands
*IDN?
Identification Query
Input: *IDN?
Returned:
Controller, Software ver. X.XX
Comments:
Used to query the Controller ID. Command
must include “*”preface. Returns Controller model and
firmware version.
ALMS
Set Alarm Status
Input: ALMS 0 or ALMS 1
Returned:
No response
Comments:
Used to set the audible alarm status where
0 = Off and 1 = On. Has same function as the Alarm Mute
key.
ALMS?
Alarm Status Query
Input: ALMS?
Returned:
0 or 1
Comments:
Used to query the current audible alarm status
where 0 = Off and 1.
CALTA
Calibrate Temp A in LN
2
(Single Point)
Input: CALTA
Returned:
No response
Comments:
Used to perform a single point calibration of
Temp A. Temp A sensor must be submerged in LN
2
. See the
“Temperature Calibration Menus”
CALTB
Calibrate Temp B in LN
2
(Single Point)
Input: CALTB
Returned:
No response
Comments:
Used to perform a single point calibration of
Temp B. Temp B sensor must be submerged in LN
2
. See the
“Temperature Calibration Menus”
Section of this manual.
CALVL
Set Level Offset
Input: CALVL ±XXX.X
Returned:
No response
Comments:
Used to set the liquid level offset.
CALVL?
Level Offset Query
Input: CALVL?
Returned:
±XXX.X
Comments:
Used to query the current level offset value.
CODE?
Global Password Query
Input: CODE?
Returned:
XXXX
Comments:
Used to query the current global password.
HITSTA
Temp A High Alarm Test
Input: HITSTA
Returned:
No response
Comments:
Used to initiate the High Temp A Alarm Test.
See the
section for more
information.
HITSTB
Temp B High Alarm Test
Input: HITSTB
Returned:
No response
Comments:
Used to initiate the High Temp B Alarm Test.
See the
section for more
information.
INITEE
Restore All Defaults
Input: INITEE
Returned:
No response
Comments:
Used to restore all factory default settings.
LNSATP
Set LN
2
Saturation Temperature
Input: LNSATP ±XXX.X
Returned:
No response
Comments:
Used to set the LN
2
saturation temperature for
single point calibration reference point.
Temperature Commands
BPTMP?
Bypass Temp Query
Input: BPTMP?
Returned:
±XXX.X
Comments:
Used to query the current bypass temp sensor
reading.
HITA
Set Temp A High Alarm
Input: HITA ±XXX.X
Returned:
No response
Comments:
Used to set the Temp A High Alarm value.