slcman

first thanks for answer. Could you please tell me where you enter "Reaction to error - Substitute output value". regards

Clic on upper right icon (see picture). You need to start the pid controller >(picture Start PID). For have the pid compact start at powerup check enable last mode (picture start at power up) You can detect pid controller mode in your program and change it. I usually use manual config and force run auto or manual, this way I never get a stopped pid controller. (picture mode detect)

I agree with Nova5 VPN is is definitely the best solution. However, I strongly suggest eWon VPN router. It have a built-in serial/ethernet or PROFIBus/ethernet Gateway usefull for Siemens 2DP plc. IT doesn't need to be involve in the vpn, eWon use outgoing connection - see video on eWon web site. I have about 20 eWon in Canada/US all work fine, device is really easy to use. http://www.ewon.biz/en/home.html

I need to track our control panel (gps or something similar). Any advise, part, manufacturer? I do have internet in the cabinet. thanks

No modem, driver seem to be at good place

maximum speed is the max speed the drive can run the motor. As example, if you are using a 0-10Vdc to control drive speed, drive will run at speed set in "max speed" while speed ref voltage is 10Vdc.

I have many plc connected with vpn in US and Canada. I strongly suggest eWon Cosy 141 for all beginner. It's easy to use you setup a vpn in less than 10 step. This vpn device as a DF1 to Ethernet I/P built-in, the serial port could be used for many other protocol as well. This is very usefull to connect a drive with no ethernet connection to the vpn. This vpn use an outgoing connection so there is no firewall issue. http://www.ewon.biz/en/ewon-cosy-141.html?ewp=33

I tried both virtualbox and VMware and I definitivly recommend VMware. Virtualbox have few issue with serial port.

You need to check what is the error in the diag buffer

Siemens HMI already have this feature in confort panel, you need to buy Sm@rt server licence. See more info at page 4/32 in catalog in attachment. Pages from _HMI catalog st80_e 2012.pdf

As far I can see, there is no free software for OPC comms with Siemens plc. Siemens opc software is S7-Lean but you can use KepServer as well.

which plc are you using?

you can't do that, force vat is only for physical io. S7 classic vat have more feature than S7 portal, maybe in the future, they will improve this. You can use normal vat and modify but this is not a real force, your program will still be able to modify variable status.

We don't really know what the 'other pc' does. If it does trend or logging,you'll need what fleaplc says. However if you just need to receive that data you may consider email function, is cheaper than buy an opc or scada licence.

I had similar issue with my first experience. SoMachine doesn't use Ip adress, web server and ping does. This is why you can't reach the plc with SoMachine. However you need to be in the same subnet of the plc, so if you can ping, this means your Ip setting is correct. Check in Program tab, double clic on ethernet, Ethernet Protocol must be set to Ethernet 2 not IEEE 802.3 - see picture. Mark_ade instruction is good, but you also need to set the controller name. It must match the one you use in your project, to do so, scan the network, then once the controller appear, right clic on controller and select Change device name... You'll be able to assign this controller with the one you use in your project. You need to clic on Set active active path as well. Don't panic, you'll lost communication, it's normal because plc default Ip adress will be changed to the one in your project (set in ethernet tab). If left few screen shot to help If it doesn't work, give us some feedback, you'll try to help.

1747-NET- AIC http://literature.rockwellautomation.com/idc/groups/literature/documents/um/1761-um004_-en-p.pdf

Each time you change data in your program, software prompt this box when you ask a crossref. Is this box appear if you make a crossref, save project, close it, reopen it and then do a crossref? I don't think you can disable this feature.

I know S7-200 have default comms while switch is in program mode. Which plc are you using?

SFC15 & 14

sfc14 & sfc15 look at the library and help for detail

I need to troubleshoot a project with motion instruction. I need some information on MAG and MAS instruction. : 1- Once MAG instruction set, does axes stay geared until a MAS instruction is called (Stop type: gear or all)? I don't understand why programmer called this instruction each 50msec. 2- If MAG instruction is ON, and stay ON while MAS is true. Does axes return to "gear-in" state once MAS instruction goes to fales or MAG need to see a new false to true transition? Actually system operate properly if speed doesn't change but when we change speed of master axis (encoder tie to driveshatf) Slave "slip about an inch. thanks for help

you can read / write data between plc by using SFC14 & SFC15. http://support.automation.siemens.com/WW/llisapi.dll?aktprim=0〈=en&referer=%2fWW%2f&func=cslib.csinfo&siteid=cseus&groupid=4000003&extranet=standard&viewreg=WW&nodeid0=10805255&objaction=csopen

I agree. Michael give me the idea of using trending function to get some trace. This is what I would like to do on my next visit on site. I will follow up with trace,thanks

Micheal you have a great idea, I'll use graphic to see what's append there. Gerry program only use MAS stop type = 3 (gear) Could you tell me if the motor will run at previous speed if MAS instruction is executed with stop type = 3 (gear) ie. 1- Motor gear-in Master run at 1800 RPM (ration 1:1) 2- MAS stop type 3 3- what's speed the axe will run? 1800RPM? regards

First, thanks for reply. You explication really help me. Back to your issue, does the the MAG instruction have the "Clutch" option checked? NO - DISABLED, I don't really understand what's this parameter does. If the difference between the Master velocity profile and the Slave pre-MAG one is significant, physical slippage might occur within the Slave's linkage at the moment of MAG's commencing. Like I said in point #1, if MAG instruction is ON 50msec and OFF 50msec continuously, is this could explain the variation while accel or decel? I guess while MAG instruction is OFF and there is not MAS command, motor run at the speed it run while MAG instruction goes OFF. In drawing I sent, I tried to represent what is caused my issue, but I'm not 100% sure, could you give me your opinion? (RED = Master speed, BLUE= slave speed) BLACK= 50msec ON, 50msec OFF) - I know Master and slave are equal while MAG is on but I lower blue line a little bit for reading. thanks