mits Q com

[Guest peter ahl]

Hi! How do I read registers in my Q system the easyest way? My programmingport is occupied by a display! /Peter

[panic mode]

use any other port. performance processors come with both RS232 and USB and you can always add communication card. i like ethernet but RS232 will do just fine. if you have CC-Link network and SC09 cable laying around, you can buy G4 module...

[Guest peter ahl]

I dont have another port. had a look on profibus module but where totaly expensive. have a e700 display from beijer and saw that you can plug an ethernet card in the display and mirror the display via the intenal webserver, probably do that! /Peter

[panic mode]

adding comm card or programming port will cost one way or another. nice thing about ethernet is that you can use one port for multiple connections.

[Colin Carpenter]

As I see it, your display is an E700 connected via its RS422/485 port to the programming port of the CPU. All you have to do is knock up a simple 9 pin to 9 pin serial cable (2-2, 3-3 and 5-5 from memory), plug this into your laptop serial port and the 9 pin port on the E700, and there you have it ....... transparent comms to the CPU through the E700 from GX Developer, IEC developer, whatever. You may have to configure the comms in E-Designer, but it's pretty easy. The internal Web Server does work reasonably well, only trouble is that you control the screen just like a local operator when you use it. Scares the hell out of local operators when the screen starts moving on it's own when he's not pressing the buttons!!! The transparent comms does slow the screen operation slightly when it's transferring a lot of data, but it's still workable.

[Crossbow]

You can use the other port on the HMI to connect to the PC. The screen supports transparent mode, which will allow the PC software to go through the HMi and on to the PLC. I assume you're using the RS232 port to go to the PLC since the Q is native RS232. You'll need the CAB6 cable to go from the RS422 port on the HMi to the PC.

[Guest peter ahl]

There is a modem connected to the 232 port but rarely used to remote update. guess i could disconnect it to test. does anyone know the price on a ethernet expansion card? can i read from the q system via the e700 and the serialport from vb.net? preferably whithout som driver or server? /Peter

[waynes]

Hi peter ahl There will be a way to read from vb.net. The only thing is that you need to send some header before connecting through transparent mode. I am not sure exactly what it is, but it is something like "{S". You can probably check what is sent out differently when selecting the "via MAC/MTA transparent mode" check box under "Online|Transfer Setup|PLC module". Good luck