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. 
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SeaI/O User Manual 
SeaMAX Application Suite 
Introduction 
The SeaMAX Suite is a collection of software libraries, and configuration and 
diagnostic utilities that facilitates rapid application development. The following 
libraries and utilities are included in the SeaMAX Suite: 
  MaxSSD Configuration & Diagnostics utility 
  Ethernet Config utility 
  SeaMAX API 
  CEthernet API 
Sealevel SeaI/O modules are available in various I/O configurations, each designed 
for maximum flexibility and easy field wiring. Host devices can communicate with 
SeaI/O modules using Modbus TCP (Ethernet) or Modbus RTU (RS-232, RS-485, 
and USB). Up to 246 expansion modules can be daisy chained together via RS-485 
using convenient pass-through connectors. Coupled with the SeaMAX Suite, 
Sealevel SeaI/O modules offer powerful data acquisition solutions, perfect for a 
range of applications and environments, and easy interfacing to a variety of 
computers, controllers, and PLCs. 
The source code referenced 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 samples are meant as examples to 
assist in your application development. Any questions about the code samples may be 
emailed to technical support at support@sealevel.com
. 










