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
Configuring N-Series Expansion Modules
Once you have successfully connected and communicated with a “base” module, you
can begin adding expansion modules (N-series). Connect a single expansion module
to the “base” module via the RJ45 pass-through connectors or screw terminals on the
left side of the enclosure. Expansion modules include a convenient 5” interconnect
cable (item# CA239) to simplify daisy-chaining SeaI/O modules together.
Alternately, you can use standard network patch cables to chain expansion modules
to a “base” module.
NOTE:
The RJ45 pass-through connectors are NOT Ethernet connectors.
Do not connect the ports to Ethernet enabled devices else damage to
Ethernet devices WILL result.
Ensure a successful Get operation (refer to the MaxSSD section on the following
pages for more information). Set the slave ID of the expansion module using the
rotary switch or software selection method discussed in the Setting Device Address
section on the preceding pages. Perform another Get operation to verify that you can
communicate with the expansion module at the new slave ID.
Continue adding expansion modules (N-series), one at a time, until all modules have
been successfully daisy-chained together and respond to a Get operation in MaxSSD.
Once all SeaI/O modules are configured and communicating successfully, they are
ready to communicate with your application.










