How could I detect communication failure between FBM232 and device. I found that ECBSTA.B23 is communication failure bit , however it gives me failure between CPU and FBM not with device.. Do you have any idea about that? Thanks in advance Yonca Yesilipek _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: //www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave