CyFlex runs on a customized version of LINUX which includes built-in drivers and other unique services. TRP Laboratories supplies this customized LINUX version on an “Install Disk”. Currently, that “Install Disk” has a customized versions of Scientific Linux called “SL6”. CyFlex will not run on a standard installation of any LINUX version. Do not attempt
The “vrbl_to_file” application is a frequently used support application that is invoked from “gp_test” procedures to set a sequence of operating conditions for the engine or test object. The data files which are read by “vrbl_to_file” have been referred to as “furball” files (a corrupt pronunciation of “vrbl_to_file”). We prefer the name “test_table” files, and
In CyFlex versions 6.0.5 and newer, the “history flag” (ON/OFF) that appears in many specification files is no longer used. Instead, the “delta_hst” application assumes that almost all variables are active (history flag = ON ). This is the case for REAL, INTEGER, and LOGICAL variables, but not for STRING variables. STRING variables are saved
In the early days of ASSET, most of the fuel measurement systems were ‘scales’ that measured the time (FR_time) it took to consume a fixed weight (FR_wt). The “scales” application would compute the fuel mass flow rate (FR_Fuel_rate) from these two values. The user had the option of sending the fuel rate to PAM or
When a file is created/edited on a Windows machine and transferred to and used on a Linux machine the dos2unix utility MUST be run on the file on the Linux machine. The dos2unix utility converts plain text files in DOS/MAC format to UNIX format. To install the dos2unix utility the following command should be run:
In versions of cyflex earlier than 6.0.5, there were only 512 variables that could be averaged during the acquisition of a PAM datapoint. These are the variables in a pam_specs.NNN file which contain the key “AVER”. If you are running 6.0.4 or 3.5.6, or Oct.09 or similar versions earlier that 6.0.5, you can determine how
Have you ever tried to ssh to a test cell and received an error that the host key was out of date? Execute the following statement to automatically remove key reference lines of the specified hostname/ip address from the known_hosts file: ssh-keygen -R [ hostname/ip_address ]
CyFlex allows the user to create computed expressions in many applications such a “compvar/gen_labels”, gp_test, limit, evnt_rsp, etc. User expressions are normally simple math calculations, but may contain some special functions which can be included in these expressions. Functions may be called in expressions using an “at” sign (@) followed by the name of the
Units Independence in CyFlex computations: CyFlex supports “units-independence”. Internally, applications such as “compvar”, mass flow rate, etc. perform computations using SI (metric) base units. Inputs and outputs to these programs involve a units conversion process so that the inputs and outputs can be in other units. A simple example of this is the computation of
The installation instructions for a FRESH install of cyflex.6.1.# have been modified. Attached you will find a document with the updated instructions for installing a 6.1 version of cyflex. The document has been modified to reflect the correct command for installing the cyflex-6.1-orig-upgrade RPM. Old command: $ sudo yum install cyflex-6.1-upgrade New command: $ sudo
