rdrast
Lifetime Supporting Member
This one has me climbing the walls right now...
Should have been simple, toss a SDN scanner into the PLC rack, configure it up with RSNetworx, download everything... good so far.
Enable BTW/BTR in the PLC though, and the scan times jump up from 20msec to 4500 randomly, averaging around 2000 msec. The BT's are using dedicated BT file control blocks, and the SDN is set up to read and write 62 words into brand new integer files.
I seem to be getting -5's and -9's as error codes in the BT data file (DLEN Element), and the BT's themselves never seem to set their timeout bit. CPU status doesn't show any errors (except watchdog timeout which is now set to 10,000msec while trying to figure this out.
The CPU is a PLC5/40-D, Rev B.
I **seem** to remember the same problem from way back, and there was a very simple, quick, easy fix, but can't find anything about it on the Rockwell site.
Any of you fine folk have any ideas?
On the road and desperate!
Should have been simple, toss a SDN scanner into the PLC rack, configure it up with RSNetworx, download everything... good so far.
Enable BTW/BTR in the PLC though, and the scan times jump up from 20msec to 4500 randomly, averaging around 2000 msec. The BT's are using dedicated BT file control blocks, and the SDN is set up to read and write 62 words into brand new integer files.
I seem to be getting -5's and -9's as error codes in the BT data file (DLEN Element), and the BT's themselves never seem to set their timeout bit. CPU status doesn't show any errors (except watchdog timeout which is now set to 10,000msec while trying to figure this out.
The CPU is a PLC5/40-D, Rev B.
I **seem** to remember the same problem from way back, and there was a very simple, quick, easy fix, but can't find anything about it on the Rockwell site.
Any of you fine folk have any ideas?
On the road and desperate!