— Overview Overview IntroductIon Thank you for choosing the XP2i Digital Test Gauge from Crystal Engineering Corporation. Your XP2i is a combination of leading edge technology and rugged industrial design. Your XP2i can be configured through the use of ConfigXP™ software available from Crystal Engineering. Your personal computer can disable, enable, or modify a variety of features of your XP2i.
— Overview communIcatIon Format Input is case-sensitive; all instructions should be sent in UPPERCASE. Instructions must be terminated with a single carriage return (CR) character followed by — an optional linefeed (LF) character. Note that while the XP2i expects either CR or CR/LF as command termination on its input, it always appends a CR/LF pair to its output.
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Overview Pressure (one line) ..Returns data and units on one line, and separates the reading and units with a comma. ?PRE Example: 2.01,PSI Pressure, High ..Pressure, High returns the stored peak pressure value, in whatever pressure units are currently being displayed. ?P,H 91.3 mmH2O...
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Overview Serial number ..The serial number is returned in two strings. A typical example is shown below: ?SN# 12659 Version ..Version returns the XP2i’s firmware version as a 4 digit number preceded by the letter “ ”.
Commands — Commands The following are commands. All commands start with an exclamation mark ( GeneraL commandS clear Peaks ..Clear high and peak low values by setting them to the current live reading (which might not be zero). For instance, if the current live reading !CLR were 253 PSI, then both high and low peak registers would contain 253.
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Commands reset ..This command schedules a reset. There will be a three second pause before the XP2i resets; during this time, no commands or queries !RST Programming tips should be sent to the unit. When the unit resets, a product identification string, called the Boot Signature, is sent. (See the on page 9 for more information.) Some communication noise, including a serial framing error, is possible on reset.
— Commands acknoWLedGment oF a command The XP2i always returns some indication to let you know a command or query was received and acted on. For queries, the return of the measurement data is the acknowledgment. For commands, possible acknowledgments are “ ”, “...
— Support Support trouBLeSHootInG tHe dIGItaL InterFace The following section gives possible reasons for various error codes..The “ ” indicates there were no overrun or framing errors, so the command was properly received. However, the “ ”...
— Support — eFFectS oF PaSSWord ProtectIon on commandS If the XP2i is password protected, the following commands will have no effect and return “ ”: , and !_4C !60F !68F !NPK !PKS !MSG !RAS !AVS ProGrammInG tIPS The XP2i is a very straightforward device to communicate with, provided you follow these tips. This advice is derived from our own experiences automating systems based on the XP2i, as well as the experiences of our users;...
— Support BootLoader SIGnature A quick note about the Bootloader Signature: This string contains a 19 character, product-specific string (whose contents may vary with product revision), followed by a carriage return (CR), making the total string length 20 bytes. However, a reset turns the RS-232 interface on and off, so it may be subject to noise;...
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