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
I/O Wiring – SeaI/O-462 and 463 Modules
SeaI/O-462 DB-78F Connectors
The SeaI/O-462’s 96 digital I/O channels are brought out to two DB-78 Female
connectors on the front of the enclosure (pinout shown below). Each connector
provides 48 bits of digital I/O divided into six eight-bit ports. Each port may be
individually configured via software command as an input or an output.
Bits 1-48
Bits A1 B1 C1 A2 B2 C2
D0
75 38 18 10 30 2
D1
76 37 17 9 29 1
D2
77 36 16 8 28 22
D3
78 35 15 7 27 21
D4
59 34 14 6 26 40
D5
39 33 13 5 25 60
D6
20 32 12 4 24 61
D7
19 31 11 3 23 62
Bits 49-96
Bits A3 B3 C3 A4 B4 C4
D0
75 38 18 10 30 2
D1
76 37 17 9 29 1
D2
77 36 16 8 28 22
D3
78 35 15 7 27 21
D4
59 34 14 6 26 40
D5
39 33 13 5 25 60
D6
20 32 12 4 24 61
D7
19 31 11 3 23 62
Power & Commons
+5V
63, 74
Commons 41 – 58, 64 – 73










