TDK-Lambda Z+ series User manual - page 33
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12 TROUBLESHOOTING
Cannot See the IP Address, LAN Status LED Stays Red
If “IP1-IP4” does not show, then LAN is not enable. To fix this:
A. Switch the power supply AC OFF.
B. Verify the LAN is selected (see section 3.1.3).
C. Switch the power supply AC ON again. See the voltage display shows “LAn” for a few seconds
during power-up.
IP Address is All Zeroes, LAN Status LED Stays Red
When viewing the IP address on the front panel, and you see the IP address is all zeroes, then the
power supply is not connecting to the network.
A. Verify the LAN cable is connected to an active network. Look at the rear panel Link LED (part
of the RJ-45 connector, see section 3.1.3) and verify it is green. If the LED is not lit, then the
LAN cable is not connected properly.
B. Wait longer and try to read the IP address again. In the Auto-IP mode the power supply will
wait a full 30 seconds to assign an IP address after power-up.
C. There could be an address collision on the network where two devices on the network have
the same IP address. If the power supply detects this, it will refuse to assign an IP address
and it stays all zeroes. This only occurs if the power supply is in Static addressing mode (see
section 4.4). To correct this situation, do either of:
i. Do a front panel LAN Reset (see section 5.3). The power supply will try to get an
address from a network DHCP server or it will create its own address in the
169.254.xxx.xxx subnet. If this subnet is not the one you are using, then use the
front panel to set an IP address that is compatible with your network (see section 5.2)
ii. Disconnect any LAN device that may have a conflicting address from the network.
Switch the power supply off and on. After 10 seconds the power supply will acquire its
static address.
Cannot Communicate with the Power Supply
If the LAN Status LED is green and the front panel shows a valid IP address, but you still cannot open
a web page, VISA or socket connection then try “pinging” the power supply. The ping utility verifies
the computer can send a message and get a response from the power supply over the network.
On a Windows XP computer, open a command line window by:
A. Click the “Start” button, Select “Run…”
B. A “Run” window opens. Type: cmd
C. Type
“ping
ping packets had successful responses.
If the “ping” does not get responses from the power supply, then there is a mismatch between
the power supply and the computer LAN settings. Also, the ping function may be disabled in the
power supply (see section 6.6.3). In this case, do a power supply “LAN Reset” (see section 5.3) and
try to connect again.