IO0001

Remove and reinsert the memory card or USB device ensuring it is fully seated and locked into the slot. Check for physical damage to the device or slot contacts.

Navigate to SYSTEM > FILE and verify the device appears in the device list. For memory cards, check if the device icon shows as available (not grayed out).

If device is not recognized, format the device externally using FAT or FAT32 file system (not exFAT or NTFS). Maximum capacity varies by control series: 0i/16i/18i typically support up to 2GB, 30i/31i/32i support up to 32GB.

Formatting will erase all data on the device. Backup programs before formatting.

Test with a known good memory card or USB device. If new device works, replace the faulty media. If problem persists, inspect parameter 0020 bit 5 (USB) and bit 6 (memory card) to verify the interface is enabled.

Verify the external RS-232 device is powered on and communication software is running with the correct COM port selected and opened for communication.

Navigate to SYSTEM > PARAM and check RS-232C parameters: 0100-0104 (baud rate, parity, stop bits), 0111-0114 (protocol settings). Verify parameter 0101 bit 0 (I/O channel selection) matches your interface: 0=RS-232, 2=HSSB, 4=Ethernet.

Check parameter 0112 (DC code setting) and 0113 (input start code). Default DC2 (XON=11H) must match host device handshaking. Verify cable is RS-232C crossover (null modem) type with pins 2, 3, 5, and 7 properly wired.

Navigate to SYSTEM > DIAGNOSIS and check diagnostic 0300-0303 for RS-232C signal status (DTR, RTS, CTS, DSR). Bits should indicate active handshaking. Test communication with a loopback connector (pins 2-3, 4-5, 6-8-20 jumpered) to isolate cable vs. device issues.

Incorrect parameter settings can prevent all I/O communication. Record original values before changes.

Verify Ethernet cable is securely connected to both CNC and network switch/device. Check Ethernet port LEDs: green LED should be steady (link established), orange LED should blink (activity). No LEDs indicates cable or port failure.

Navigate to SYSTEM > PARAM and verify Embedded Ethernet parameters 0900-0999 series. Check 0901 (IP address), 0902 (subnet mask), 0903 (gateway). Use SYSTEM > DIAGNOSIS > Ethernet screen to verify link status and ping test to remote device.

If using FS-30i/31i/32i with DATA SERVER function, verify parameter 0917 (host name/IP of file server) and check that FTP or SMB service is running on remote server. Test connection using SYSTEM > FILE > Network Device.

Check parameter 0101 bit 0-2 to confirm I/O channel is set correctly: bit pattern 4=Ethernet, 5=DATA SERVER. Power cycle the CNC after parameter changes to reinitialize the network interface stack.

Network parameter changes require CNC reboot (power cycle with parameter write enable ON). Ensure parameter write enable switch or parameter 3202#0=1 before changes.