Impulse 8126 - Manual (Page 33)

Troubleshooting Ethernet (E-series) SeaI/O Modules
Problem: The SeaI/O module starts up with a strange IP address (i.e., 169.254.x.x)
All Ethernet SeaI/O (E-series) modules are shipped with DHCP enabled. If no
DHCP server is available or the DHCP server cannot be reached, the Ethernet SeaI/O
module will default to a random IP address in the range 169.254.0.1 to
169.254.255.254. Change the PC’s network settings to place both the SeaI/O module
and PC on the same subnet. Adjust the SeaI/O module’s IP address and Netmask
using the Ethernet Config utility (Start Æ All Programs Æ Sealevel SeaMAX Æ
Ethernet Config) installed with SeaMAX. Then restore the PC’s network settings.
Problem: The SeaI/O module is visible in Ethernet Config, but the network settings
cannot be changed
The SeaI/O module is most likely on a different subnet than the PC. The PC’s IP
address and Netmask must be altered to place both the SeaI/O module and the PC
within the same subnet. Contact your network administrator for assistance.
Problem: The SeaI/O module doesn’t show up in Ethernet Config
The Ethernet SeaI/O modules are discovered via a UDP broadcast. Verify that any
firewall software, such as Windows Firewall, ZoneAlarm, etc., or router settings that
would hinder UDP transmissions are disabled.
It is also possible that the SeaI/O module may not be discovered if the PC and
module are on separate subnets. This may occur if the module’s IP address is
configured outside the range of the PC’s subnet. It can also occur during a failed
DHCP discovery. In either case, the “Recover Module” button in Ethernet Config
utility may be used to recover the device. Refer to the Hardware Configuration
section of this manual for more information.
Problem: The rotary switch (ADDR) was used to reset an Ethernet SeaI/O module,
but it no longer responds to a ‘Get’ operation.
If you reset the SeaI/O module by rotating the rotary switch clockwise one full
revolution, the RS-485 port will reset to 9600 bps and no parity, but the Ethernet port
will remain unaffected.
The broadcast feature in MaxSSD sets the Ethernet SeaI/O (E-series) module’s
TCP/IP to RS-485 translation data rate independently of the SeaI/O module itself.
Therefore, if you have an Ethernet SeaI/O module and you set the data rate to 115.2K
bps via a MaxSSD broadcast command, both the RS-485 port and the Ethernet port
will respond thereafter to 115.2K bps, as expected. Using the rotary switch will reset
the RS-485 port, but the Ethernet port will still try to communicate at 115.2k bps. To
restore communications, broadcast a set data rate and parity command (9600 and no
parity) via MaxSSD.
© Sealevel Systems, Inc. - 31 - SeaDAC Lite User Manual