Campbell SDM-SIO1A Instruction Manual page 8

Table of Contents
7. Operation .................................................................. 22
8. Troubleshooting and Maintenance ......................... 24
Appendices
A. Using the Handshaking Lines for General
B. Matching SDM-SIO1A Connections to an
Figures
Tables
CRBasic Examples
7.1 Configuring Handshaking and Receive-Only Modes ........................ 22
7.1.1 Using RTS/CTS and Automatic Handshaking ........................... 22
7.1.2 RS-485 Half-Duplex Mode ........................................................ 22
7.1.3 Using the RS-232 Link in Receive-Only Mode ......................... 23
7.2 Power Conservation .......................................................................... 23
7.3 Schematic .......................................................................................... 23
8.1 Troubleshooting ................................................................................ 24
8.2 Maintenance ...................................................................................... 25
8.2.1 Upgrading the Operating System ............................................... 26
8.2.2 Operating System Signature Errors ............................................ 26
8.2.3 Checking the Operating System Version and Signature ............ 26
Input/Output ......................................................... A-1
A.1 The Input Pin (CTS/Pin 11) ............................................................. A-1
A.2 The Output Pin (RTS/Pin 8) ............................................................ A-2
SDM-SIO1 ............................................................. B-1
1-1. SDM-SIO1A Serial Input/Output Module .......................................... 1
7-1. RS-485 Internal Circuit Diagram ...................................................... 24
6-1. SDM Address Settings ........................................................................ 8
6-2. SDM-SIO1A Terminal Labels and Functions ..................................... 9
6-3. SDM-SIO1A Functional Description of the Connections ................... 9
6-4. Communications Port Parameters RS-232 ........................................ 16
6-5. Communications Port Parameters RS-485 Full Duplex .................... 16
6-6. Communications Port Parameters RS-485 Half Duplex ................... 17
6-7. Communications Port Parameters RS-232 Receive-Only Mode ....... 17
B-1. Pin Cross Connection Table for SDM-SIO1 to SDM-SIO1A ......... B-1
6-1. RS-232 Mode Example ..................................................................... 20
6-2. RS-485 Mode Example ..................................................................... 21
8-1. Checking the Operating System Version and Signature .................... 27
A-1. Detecting the State of the Input Line ............................................... A-1
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