Controller Setup Verifying

Verifying

Is the port actually open

netstat -ano | findstr "18735 18736"

Both should show LISTENING (only 18735 if you're only using S8). The PID corresponds to the virtual controller's process, checkable against Robot_1\services.txt to confirm it's the same workcell.

Can Python actually connect

fanuc status

Seeing driver: fanuc-driver 0.2.0 means the extended driver is active, not just an upstream connection. If typing connection parameters (--host/--port etc.) every time is annoying, save them with fanuc connect set first, see the command-line section in README.md.

When something's wrong

Symptom	Cause
WinError 10061	port not LISTENING. ROBOGUIDE isn't open, MAPPDK isn't running, or the tag number doesn't match the driver, see server tags
PROG-048 Released [SHIFT] key	running in T1/T2, switch to AUTO
INTP-106 Cannot execute program	the program is stuck PAUSED with an uncleared error; ABORT first, then RESET
MCTL-003 System is in error state	press RESET; if it persists, check the e-stop and fault state
TP shows started but the port isn't open	the tag number doesn't match SERVER_TAG_NUM in the driver source
18735 reachable, 18736 isn't	S7 wasn't configured or started, or line 2 (RUN MAPPDK_LOGGER) was deleted from MAPPDK
No KAREL Programs under Type	the R632 option isn't installed, see prerequisites
fanuc status shows the upstream version (not fanuc-driver x.x.x)	an old or upstream .pc got loaded; reload the files from driver/upload/

Something's stuck, or the Python side just isn't responding: AUX → ABORT, then rerun MAPPDK following running it.

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Last updated: 2026-08-31