Article - CS416950
Focas 1 Data Window Library Error Codes in Fanuc Focas Ethernet Driver of PTC Kepware Products
Modified: 13-Oct-2025
Applies To
- Kepware Server (formerly KEPServerEX) 6.0.2107.0 to 6.18
- ThingWorx Kepware Server (legacy) 8.0 to 6.18
Description
- Getting below error while reading data from Fanuc 31i-B on Nakamura-Tome NTY3-150 machine
Fanuc Focas Ethernet Could not acquire library handle for device 'NY4.NY4'. FWLIB error: -16.
- Showing Error in Event log
Could not acquire library handle for device <channel.device>. FWLIB error: -15
- Can't communicate with Fanuc Focus 2 CNC
This is a printer-friendly version of Article 416950 and may be out of date. For the latest version click CS416950