Omron DRM-21 Error F1 with PJ1M-CPU11

[ching99]

My machine was running for 2 years with PJ1M-CPU11 + DRM-21, now it can't run in auto mode and shown error "F1" with default node address 63 (Master). DRM-21 is link to 4 slaves at machine. Measured cable 60 ohm (with termination on at last slave), and 121 ohm (with termination off at last slave). When I tried to replace the DRM-21, the new DRM-21 is different version and shown error d6-02. Appreciated if you could advise further what should I check or rectify further. Thank you in advance. Ching99

[PdL]

Hard to say what is wrong. F1 error is Bus off. Usually when the network is not ok, cabling, termination, etc. Termination should be on at both sides, 60 ohms total impendance. d6-02 on replaced DRM21 indicates that the scan list registered in the DRM21 doesn't match the slaves in the network. Did you also download the correct configuration in the DRM21 after replacement? Err7Seg from W380-E1-08 DRM21.pdf