EFD ULTIMUS V User Manual page 37

2. RS-232 Commands
The following is a list of the RS-232 commands for the Ultimus V. Each item will give a brief description of
the command, command format with a description of the data that is attached to the command, and if
necessary, the format of the return command along with a description of its attached data. A dash '-'
represents an ASCII space value (0x20h).
2.1 Protocol Commands
These commands are used to communicate command success or failure between the remote host and
the Ultimus V.
2.1.1 Success Command
This command will be sent if a command was successfully executed.
Format: A0
2.1.2 Failure Command
This command will be sent if a command failed to execute. This could be caused by an error in the
command packet or the transmission of the command packet was interrupted and had timed out.
Format: A2
2.2 Download commands
These commands are only from the host to the dispenser. The dispenser does not return any data.
2.2.1 Memory Change Command
This command changes the selected memory location of the dispenser. The LCD screen will update
to the new memory location, including updating the dispense time, pressure and vacuum parameter.
Host Format: CH--ccc
ccc: The 3-digit memory location from 0-399. The dispenser will automatically limit value to
prevent any errors.
2.2.2 Timed Mode Command
This command switches the dispenser into timed mode.
Host Format: TT--
2.2.3 Steady Mode Command
This command switches the dispenser into steady mode.
Host Format: MT--
2.2.4 Time/Steady Toggle Command
This command toggles the dispenser between Timed mode and Steady mode.
Host Format: TM--
2.2.5 Pressure Set Command
This command updates the pressure value in the current memory location
Host Format: PS--pppp
pppp: The 4-digit pressure setting excluding the decimal point. This is a unitless value. The valid
pressure ranges and decimal point are determined by the pressure units currently selected in the
dispenser.
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APPENDIX B
RS-232
Connection
Protocol
37