Control System Hardware Environment Variables - Addi-Data APCI-8001 Commissioning Manual

CM / C M 19
OMMISSIONING ANUAL

3.12 Control system hardware environment variables

Environment variables can be set in the control system hardware environment, to configure the control
system hardware or software. These environment variables are set and reset using the fwsetup.exe
configuration program when the system is not booted. To set environment variables, the instruction:
set variable value
is entered in the data window of the "Monitor" tab page. A repeated assignment overwrites a previous
assignment. To delete the environment variables, the instruction:
unset variable
is entered. Note that the spelling of these instructions and parameters must be exactly right (high/low case).
The current status of the environment variables can be displayed by entering the instruction
set
(without parameters). If the display is not complete, press "Enter" to display another environment variable
until all the variables have been listed in the monitor window.
From RWMOS.ELF V2.5.3.37 andmcug3.dll V2.5.3.25 on, in the PCAP programming environment,
environment variables of the control can be read out. Hereto the function getEnvStr() is available. However, in
this way the setting of environment variables is not possible.
Important note: The status of the environment variable is an important characteristic of the respective
control system and must be documented. For example before using a replacement device or by reproduction
of a system, the entries made by the user must be restored. The screen contents can be copied into a text
file via the Windows clipboard, for documentation purposes.
Please note also that the formatting of these instructions and parameters must be exactly correct in terms of
upper and lower-case, or the entry will be invalid.
These environment variables are only required in special cases. For normal servo and stepper motor axes,
environment variables do not need to be set. Incorrect use of these variables may compromise the operation
of the module.