Intermittent Connection via Hostlinl

[denise01]

Hi, I have a problem with my connection via Hostlink that I use in order to monitor Supervisor on one of our production lines. there are 3 CJ1M plcs connected to the end of line PC using AL001 Inerface connector and a CIF 11 in each plc the problem is that 2 of the plcs connect okay but the 3rd keeps losing its connection. it will stay on if I connect via rs232 on the laptop. I have changed the plcs CIF 11 but thre problem is still there. I have assigned unit numbers to the 3 plcs, cant understand howit can connect and then disconnect. Peter

[Sleepy Wombat]

two things come to mind 1. bad connection 2. Interference.. what type of cable are you using between the PLC's.