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
Example SeaMAX Programming Tasks
The following is a sampling of the various tasks that can be performed with the
SeaMAX library. For more complete examples, see the provided Visual C++ and
Visual Basic examples installed with the SeaMAX libraries.
NOTE:
The SeaMAX installation places all these examples in the SeaMAX
installation folder. Refer to those examples for more complete and
in-depth information.
Opening/Closing a SeaI/O Module
Whether in C++ or Visual Basic, the process of accessing the SeaMAX libraries
begins with the creation of a SeaMAX object. After creating the SeaMAX object,
Open() can be called with a string argument indicating where the resource exists –
either as COM resource or as a TCP/IP resource.
The following is an example of how to open a COM based SeaI/O module with an
RS-232 bridge, USB bridge, or direct RS-485 connection.
CSeaMaxW32 cw32;
char *portString = “sealevel_rtu://COM6”;
int result = cw32.Open(portString);
For a TCP/IP connection to a SeaI/O module with a Ethernet bridge, the example port
string below is valid. The code below is an example of how to open a TCP/IP
enabled SeaI/O module in Visual Basic.
dim seaMaxPointer as Long
dim portString as String
portString = “sealevel_tcp://10.0.0.1”
seaMaxPointer = SeaMaxW32Create()
returnValue = SeaMaxW32Open(seaMaxPointer, portString)