A litte hardware storie first.
PLC : 1756-L61 Control logix V15, communicating via 1756-ENBT A ver. 3.9
Ifix : Version 3,5, Driver Igs ( The newest ) dont remember the version.
GE Quick panel: QP Control 12” TFT
The Ifix and the control logix is sitting in the same switch. The Quick panel is cornectet to the Internet and communicate by a VPN cornection.
The Control logix is communicating whit the Quickpanel and Ifix
The Quick panel is communicating whit Ifix and the Control logix.
After a while the cornection whit the PLC and the Quickpanel stops ( only 8 floating points are transfered between the Quick panel and the control logix ). “The while can be between 1 – 14 days”
The funny part is that it is impossible to go online (by RS-linx ) on the control logix 1756-ENBT A card, but the Ifix can still se the control logix, and read - write data to the plc.
It is also impossible to browse the web server on the 1756-ENBT A.
It is like som gates in the ethernet card 1756-ENBT A is getting closed.
By removing the card from the rack, and put it back in, then the communications begin again.
I have tryed to replace the card, using different firmwares ect..
Please – I am really lost
Edited by CrazyDanE, 06 December 2005 - 09:01 AM.