Impulse 463N - Manual (Page 50)

©Sealevel Systems, Inc.
SL9049 - 11/2010
SeaI/O Manual 50
Problem: The SeaI/O module starts up with a strange IP address (i.e., 169.254.x.x).
All Ethernet (E-series) and Wireless (W-series) SeaI/O modules are shipped with DHCP enabled. If no
DHCP server is available or the DHCP server cannot be reached, Ethernet SeaI/O modules default to
a random IP address in the range 169.254.x.x. Wireless SeaI/O modules default to a random IP
address in the range 192.168.0.x. 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  All Programs  Sealevel SeaMAX  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.
Ethernet and Wireless 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 (or Wireless) 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 SeaI/O module‟s TCP/IP to RS-485 translation data rate
independently of the SeaI/O module itself. Therefore, if you have an Ethernet or Wireless 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.