FANUC Alarm HOST-246 — Illegal Hosttable Entry … …
Manufacturer wording — Illegal Hosttable Entry %d %d
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC HOST-246 (“Illegal Hosttable Entry … …”): A Hosttable entry is configred with an illegal name. First check: Change the robot Hosttable entry in the Host Comm TCP/IP screen to a legal name.
Updated 2026-09-17 · LogrobotLM reference
Description
A Hosttable entry is configred with an illegal name. If n1 = 1, the illegal name is in the local host table. If n1 = 2, the illegal name is in the shared host table. n2 indicates the entry number of the name in the respective table.
Remedy
Change the robot Hosttable entry in the Host Comm TCP/IP screen to a legal name. A legal Hostname is a text string of characters drawn from the alphabet (A-Z, a-z), digits (0-9), and minus sign (-). No blank or space characters are permitted as part of a name, nor is the underscore character (_). The first character must be an alpha character. The last character must not be a minus sign.
Related codes
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →