Host Commands Polycold Cryochiller
Example of Interface Usage: Installation and Operation Manual
Brooks Automation
7-6
214072 Revision B
Test or Use the Excel Macro
1. Test the Macro by closing Excel and then opening the CheckSum Macro Excel file.
2. Click on Developer tab, click Macros. Select the CalculateCheckSum Macro. Click Run.
3. Enter the sample command SW_VER,? using upper case only. Press OK.
4. Excel calculates the checksum and a checksum window appears. The window should show the
checksum is P. If not, check the command that you entered and check the macro.
5. To use the macro, follow the steps above entering the command in all caps without the $.
Example of Interface Usage:
A user has a Polycold Cryochiller with connections for both the RS-232 port and Ethernet Port and
wants to set a parameter value for DEFR_SETPT using the RS-232 connection.
In the RS-232 terminal, the user must
• Send a command to set SYSTEM_CONTROL_MODE to 2 (RS-232 port)
• Send a command to set DEFR_SETPT along with the value to be set
If the interface sends a Set command and the interface does not have control, the host will respond with
“C” which means that the command is OK but cannot be executed.
Example of a Get Host Command
$SW_VER,?P command to get current installed software version
$ then command SW_VER then ,? (get parameter) then P (command checksum)
$AQF0.1.0.32I response to command to get current installed software version
$ then response code A (accepted) then response value QF0.1.0.32 then I (response checksum)
Example of a Set Host Command
$SYSTEM_CONTROL_MODE,04 command to Set System Control Mode
$ then command SYSTEM_CONTROL_MODE then ,0 (set to 0 local mode) then 4 (checksum)
$A0 is the response for Set System Control Mode
$ then response code A (accepted) then 0 (checksum)
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