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
A/D Inputs Tab
The “A/D Inputs” tab displays the current state of the analog-to-digital channels for
devices that feature A/D inputs. Settings are provided for both device wide and per-
channel configuration.
The “Device Configuration” selection drop-box adjusts the arrangement and function
of the A/D input channels. Input channels are displayed as banks (groups of eight).
Each channel is range configurable via the voltage range dropdown list. Both the
channel voltage range and device-wide configuration are set on a dropdown list.
There is no need to save your settings – they are automatically saved to the device as
you select the various configuration options.
“10x Hardware Gain Enabled” checkbox – Indicates whether or not the onboard
hardware gain jumper is currently set. This option is not user configurable – it only
reflects the status of the onboard hardware jumper settings. Set the hardware jumper
to enable this functionality, which allows smaller voltages to be measured more
accurately (e.g., a 0-1V input signal can be measured more accurately by enabling the
10x hardware gain jumper and setting the SeaI/O-470 A/D input channel for 0-10V
range).
“Show 12-Bit Hex Values” checkbox – Displays the values returned by the A/D
converter as a hexadecimal value without converting the values to engineering units
(i.e., Amps or Volts)










