Hi guys,
I have several machines that are using the Micrologix 1200 with a Panelview 300 HMI which I would like to convert to a Micrologix 1100. The PLC only has one available mini din port for DF1 to the HMI. If the HMI is connected to the PLC com port, there is no programming port available unless you disconnect the HMI. And no port for data acquisition if required (unless you use a port splitter or expansion card). To overcome this problem , the Micrologix 1200 goes to a Net-ENI and the Panelview 300 to another Net-ENI and both Net-ENI's to a 4-port ethernet hub. The data acquisition for a future SCADA system can be accomplished through the hub.
Timing of the triggers and delays is very critical with 4-high speed vision cameras checking for different profiles and 1-laser sensor checking for threads on nuts situated on a circular high density dial which must must put out 300+ nuts per minute (target is 500+ nuts per minute) and must detect 99% reject parts.
I checked the scan time of the Micro1200 with the running program and read 12ms peak. With the same program on the Micro1100, the scan time read 90ms peak. I called Rockwell and they informed me that the e-net port on the 1100 requires a lot of overhead and therefore will slow down the scan time.
Has anyone else come across this problem?
Any suggestions or ideas are much appreciated.
Thanks in advance,
Tam Ho
I have several machines that are using the Micrologix 1200 with a Panelview 300 HMI which I would like to convert to a Micrologix 1100. The PLC only has one available mini din port for DF1 to the HMI. If the HMI is connected to the PLC com port, there is no programming port available unless you disconnect the HMI. And no port for data acquisition if required (unless you use a port splitter or expansion card). To overcome this problem , the Micrologix 1200 goes to a Net-ENI and the Panelview 300 to another Net-ENI and both Net-ENI's to a 4-port ethernet hub. The data acquisition for a future SCADA system can be accomplished through the hub.
Timing of the triggers and delays is very critical with 4-high speed vision cameras checking for different profiles and 1-laser sensor checking for threads on nuts situated on a circular high density dial which must must put out 300+ nuts per minute (target is 500+ nuts per minute) and must detect 99% reject parts.
I checked the scan time of the Micro1200 with the running program and read 12ms peak. With the same program on the Micro1100, the scan time read 90ms peak. I called Rockwell and they informed me that the e-net port on the 1100 requires a lot of overhead and therefore will slow down the scan time.
Has anyone else come across this problem?
Any suggestions or ideas are much appreciated.
Thanks in advance,
Tam Ho