pv 550 error 613

[naikkam]

hi
i need help
my pv 550 is connected through 1761-net AIC+ to micrologix 1500. problem started with falut light on microligix 1500 and lost communication with pv 550. pv 550 shows "613 requied network node(S)not found. after reset power run light is on and faslut gone on micrologix 1500. but still shows the error msg. on pv 550
613 REQuired network node(S) not found

 

[robo77]

attach pc and check communications setup and that the correct program is intact

 

[naikkam]

attach pc and check communications setup and that the correct program is intact

Thanks robot
I am new to plc
C
an u tell me in detail Pl.