- #How to connect laptop to siemens simatic s7 300 serial#
- #How to connect laptop to siemens simatic s7 300 software#
When PROFIBUS is plugged in and I go to the second port, however, I cannot get it to talk to my laptop.Ģ. The two local slaves appear to be functional they have no fault lights and if I unplug PROFIBUS and plug in the S7 adapter, I can talk to them. To answer your questions and to give a general update:ġ. I'm seriously beginning to wonder if the COMM ports are fried? Don't know how likely that is but if I can't even connect locally, what else can I do? I've tried several addresses and every conceivable iteration of settings just to be sure, and I can't even connect to it at the control panel.
#How to connect laptop to siemens simatic s7 300 serial#
I'm using a PPI adapter via a serial port at 19.2K and it's just not connecting, at all.
#How to connect laptop to siemens simatic s7 300 software#
I do indeed have the STEP7 software and when I try to connect to the two local PLCs, I keep getting communications errors. I do have the original software so I've been pouring over everything that I have, but one thing that alarms me the most is that I can't even connect to the slave PLCs locally at the panel with a laptop. There are two local slave PLCs onsite (filter controllers) and one remote slave PLC that operates a pump station from a nearby lake. I'm currently onsite and the whole system is down basically the system consists of a main control panel at the water treatment plant (Filter Control Panel, or FCP) and the master PLC is the S7-300. It's definitely PROFIBUS, so I know that much. I know it's a broad question, but if anyone had any suggestions for what I might look for, and/or what the BUSF failure could indicate, I'd be most appreciative. They've tried power cycling everything but that does not seem to help. The system operator has told me that the problem started after a recent storm (with lightning). From what I've gathered from some Google searching already, this failure indicates that there is a comms failure between the master PLC and one or more of its slaves, which are communicating via PROFIBUS. The specific issue is that on the master PLC, there is a "BUSF" failure.
The system is a water treatment plant, and the master PLC is a Siemens Simatic S7-300. I've never worked with this particular site so I'm not entirely sure what to expect, though I am lucky in that the company I work for installed it (back before I worked here) so I have some pretty good system level documentation. Tomorrow I'm heading down to take a look at an existing SCADA system that has failed, and I was wondering if anyone had some suggestions for what I might keep an eye out for.