Owner's manual
Troubleshooting SeaMAX 
Following these simple steps can eliminate most common problems. 
1.  Read this manual thoroughly before attempting to install the device in your system. 
2.  Uninstall any previous versions of the SeaMAX software before installing any new 
versions. 
3.  Install SeaMAX software first, before connecting any Sealevel I/O devices. 
Installing the software places the necessary files in the proper locations on your 
system. After installing the software, proceed with adding the hardware. 
4.  When installing SeaI/O modules, connect them one at a time
. The “base” module 
must be properly configured and communicating successfully with the host before 
you can add additional expansion modules. Verify that each expansion module can 
communicate before connecting additional expansion modules. 
5.  Confirm that all screw terminal connections are correct and secure and that the 
correct cables are being used, including network cables (crossover vs. patch cables). 
6.  You can use standard network patch cables (straight-through cables) to connect 
SeaI/O modules together via the pass-through connectors on the left side of the 
module. Crossover cables should never be used to connect two or more SeaI/O 
modules together. Crossover cables should only be used to connect an Ethernet 
SeaI/O module to a host without going through an Ethernet hub or switch. 
7.  On SeaI/O modules, verify that the device address (slave ID) is properly set. Refer to 
the Hardware Configuration section of this manual for instructions on setting the 
device slave ID. 
8.  Use the MaxSSD utility, included on the software CD, to verify proper installation. 
MaxSSD is designed to simplify the installation, configuration, and diagnostics of 
Sealevel SeaI/O modules. 
9.  If the SeaI/O modules only sometimes respond to a Get operation or return invalid 
data, you may have termination improperly set. Refer to the Hardware 
Configuration section of this manual for instructions on properly setting line 
termination and pull-up/pull-down resistors. 
10. Refer to the Troubleshooting Ethernet & Wireless Modules section on the 
following page for additional steps regarding Ethernet (E-series) SeaI/O modules. 
11. If these steps do not solve your problem, please contact Sealevel Technical Support. 
Our technical support is free and available from 8:00AM-5PM Eastern Time, 
Monday through Friday. You can contact Technical Support via: 
Phone: (864) 843-4343 
Email: support@sealevel.com
© Sealevel Systems, Inc. 
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SeaI/O User Manual 










