question: Have you setup the routing table (i.e. network 1 is definitely the ETN/EIP card?)
question: what are the 2 node number dials set to on ETN/EIP card?
Try...
DNA: 1
DA1: 0
DA2: 0
SNA: 1
SA1: last_octet_of_PC_IP
SA2: 0
and try...
DNA: 0
DA1: decimal-value-of-node-dials-on-ETN/EIP
DA2: 0
SNA: 0
SA1: last_octet_of_PC_IP
SA2: 0