Troubleshooting Guide - Analog Devices LINEAR TECHNOLOGY LTC2874 Demo Manual

trouBleshooting guiDe

PROBLEM
No Ethernet connection (LED0 not blinking)
DHCP worked previously, but the Control Tool no
longer connects in a subsequent session
Error message "Can't connect to the IO-Link
Master" or "Can't Open the port!"
Missing power to connected device
Missing DI or DO button
COMLOST fault when attempting IO-Link
connection
COMPFAULT
TEMP-FAULT
Master PHY event
General misbehavior
Can't "Select Device" to change IODD
Can't find the IP addressed to the DC2228A
DHCP mode doesn't work
DHCP mode doesn't work on a particular Local
Area Network
License key fault (LICENSEKEYFAULT)
DEMO MANUAL DC2228A
SOLUTION
a. Check Ethernet cable connection.
b. Check 24V power supply to green connector (if source selector S1 in up position).
c. Check power adapter connection to PoE power sourcing equipment (if S1 in down position).
d. If using PoE, check PD classification settings against PSE rating. Adjust J41/J42 settings as
needed (see Table 5).
A new IP address might have been assigned to the DC2228A by the DHCP server. In the Control Tool,
run Master settings → Find to confirm the address. Refer to the Normal Configuration for Network
Connection using DHCP section for details.
a. If LED0 isn't blinking, refer to above issue.
b. Check IP address settings for PC and DC2228A.
a. Check device cable connection.
b. Check that Control Tool port number matches actual port.
c. Click "Power ON" button.
Remove the IODD file association via: Select device → Exit and not select
a. Check device cable connection.
b. Check that Control Tool port number matches actual port.
c. Click "Power ON" button if device lacks power.
d. Check that correct IODD has been loaded and Device Parameters entries are valid.
a. Remove IODD selection, then check whether "Inspection level" setting was inadvertently
changed. Normally it should be set to NO CHECK. When done, reselect IODD.
b. Check health of connected device.
Refer to Thermal Protection section.
a. Investigate source of PC board overheating (overload or environmental).
b. Allow PC board to cool.
c. Return each port to operation, beginning with port's "Power ON" button.
Refer to Fault Conditions section.
Press SW1 (RESET) button on DC2228A. This will require communication between the Control Tool
and DC2228A to be re-established.
Select "Inactive" and "Power OFF" buttons first.
a. Run Master settings → Find to find the IP address. Refer to the Normal Configuration for
Network Connection using DHCP section for details.
b. Reset Winsock and TCP/IP stack. For a Windows 7 PC:
• netsh winsock reset catalog
• netsh int ipv4 reset reset.log
• netsh int ipv6 reset reset.log
• Restart computer.
a. Review Additional Information section.
b. Press SW1 (RESET) button on DC2228A.
Work-Around: Use a direct Ethernet connection and a fixed IP address. To clear DHCP behavior, refer
to One-Time DC2228A Configuration to Use a Fixed IP Address Instead of DHCP.
a. Obtain free renewal of 10000 minute license. See Software License and Renewal section.
b. Purchase unlimited license.
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