Oh, thank you!
I have same problem (maybe my english is not good, sorry):
fence_ipmilan -A md5 -a 192.168.121.112 -l ADMIN -p *** -o status
Getting status of IPMI:192.168.121.112...Chassis power = On
Done
fence_node proxmoxnode1 -S -vvv
status proxmoxnode1 dev 0.0 agent fence_ipmilan result...