Seneca S6001-RTU, Руководство пользователя

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USER MANUAL – Z-TWS4/Z-PASS2-S/S6001-RTU
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19.1.6 LINUX_SHELL
Seneca FB for access to the Linux Shell.
Max 255 command line characters.
For access to the output use "> output.txt"
Shell_cmd : string command
@Enable : if true execute the shell command
Result : the return value of the "system" C function
Usage Example:
"ls > output1.txt"
create the directory list into output1.txt
19.1.7 LINUX_SH_ASYNC
The LINUX_SH_ASYNC FB executes a command in a Linux shell, in asynchronous mode.
When first called, the FB runs a Linux shell process which starts performing the
command; on subsequent calls, it only checks if the process has finished the
command execution.
The FB has the following input parameters:
- COMMAND : the command to be executed
- TIMEOUT : timeout, in seconds
- @ENABLE : TRUE -> FB is executed
FALSE -> FB is skipped
The FB has the following output parameters: