The listening function (-L) was added as a command at the beginning of the program followed by a -end at the end, this way the data coming from Pc-Dmis was indeed live and sent the stats data as it measured, this shortened the cycle time.
Unless this has changed recently (I don't use it any more due to changing jobs) you would add the external command at the beginning of the program with -l and end of your program with -end.
The listening function (-L) was added as a command at the beginning of the program followed by a -end at the end, this way the data coming from Pc-Dmis was indeed live and sent the stats data as it measured, this shortened the cycle time.
Unless this has changed recently (I don't use it any more due to changing jobs) you would add the external command at the beginning of the program with -l and end of your program with -end.