Owner's manual
Table Of Contents
- Table of Contents
 - Introduction
 - SeaI/O Hardware Description
- SeaI/O Base and Expansion Modules
 - SeaI/O Module Common Features
 - SeaI/O Configurations & Specifications
- 410 Series – 16 Optically Isolated Inputs/16 Reed Relay Outputs
 - 420 Series – 16 Optically Isolated Inputs/8 Form C Outputs
 - 430 Series – 32 Optically Isolated Inputs
 - 440 Series – 32 Reed Relay Outputs
 - 450 Series – 16 Form C Relay Outputs
 - 462 Series – 96 Channel TTL DB-78
 - 463 Series – 96 Channel TTL 50-Pin
 - 470 Series – 16 A/D, 2 D/A, 8 24V Outputs, 8 Isolated Inputs
 - 520 Series – 8 Optically Isolated Inputs/8 High-Current Form C Outputs
 
 
 - Power Options
 - Hardware Configuration
 - Wiring Options
 - Mounting Options
 - Accessories
 - SeaMAX Application Suite
- SeaI/O Architecture
 - Device Address Configuration
 - Configuring the “Base” SeaI/O Module
 - Configuring N-Series Expansion Modules
 - Configuring an Ethernet Module (E-Series)
 - MaxSSD Configuration & Diagnostics Utility
 - Communicating Via Modbus
 - Extended Modbus Command Set
 - Developing Custom Applications Using SeaMAX API
 - SeaMAX API
 - Non Object-Oriented SeaMAX API
 - IOCTL Calls and Functionality
 - Using SeaMAX with Visual C++ 6.0
 - Using SeaMAX with Visual Basic 6.0
 - Example SeaMAX Programming Tasks
 
 - CEthernet API
 - Appendix A – Data Encoding Tables
 - Appendix B – CRC Calculation
 - Appendix C – SeaIO Model 462/463 Holding Register Set
 - Appendix D – SeaMAX Data Types and Structures
 - Appendix E – Troubleshooting
 - Appendix F – How To Get Assistance
 - Appendix G – Compliance Notices
 - Warranty
 

© Sealevel Systems, Inc. 
- 87 - 
SeaI/O User Manual 
CEthernet API 
The CEthernet API is designed as an extension library that enables programmers to 
develop applications to automatically find, configure, and use Ethernet-enabled 
Sealevel devices. This library removes the manual hard-coding requirement of 
locating a device on the network and replaces it with an automatic search function. 
The CEthernet Development Libraries support the SeaI/O (Digital I/O) E-series and 
SeaLINK (Ethernet Serial Servers) product families. 
The source code contained in this document is designed to offer a high-level 
overview of how to utilize the libraries contained on the Sealevel software CD-ROM 
that ships with all SeaI/O modules. These code segments are meant as examples to 
assist in your application development. Contact technical support regarding any 
questions about the included code segments. 
NOTE: 
This library is not required to use any Sealevel Ethernet device. 










