alielectrical
Member
DP/DP Coupler
We have S7 300 DP coupled with 505, using Siemens DP/DP coupler.
When we turn off the 24 dc supply to DP/DP coupler and then switch on, DP/DP coupler shows fault on 505 side.Led blinking red.
Whereas S7 300 side is OK.
When we disconnect the profibus plug of 505 on the DP coupler and then reconnect it. The fault goes away.
We have to do this everytime the power is disconnected.
We checked everything, cable, interchanged the profibus cable on the coupler etc. But no improvement.
Can anyone help me find the problem. What could be wrong.
I am not very familiar with couplers' myself. So if I am not clear, pls inform me as to what more info should I give to get help.
Thanks and regards,
ali.
__________________
alielectrical
We have S7 300 DP coupled with 505, using Siemens DP/DP coupler.
When we turn off the 24 dc supply to DP/DP coupler and then switch on, DP/DP coupler shows fault on 505 side.Led blinking red.
Whereas S7 300 side is OK.
When we disconnect the profibus plug of 505 on the DP coupler and then reconnect it. The fault goes away.
We have to do this everytime the power is disconnected.
We checked everything, cable, interchanged the profibus cable on the coupler etc. But no improvement.
Can anyone help me find the problem. What could be wrong.
I am not very familiar with couplers' myself. So if I am not clear, pls inform me as to what more info should I give to get help.
Thanks and regards,
ali.
__________________
alielectrical