Table of Contents
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Contents
1. Introduction................................................................. 1
2. Specifications ............................................................. 2
3. Installation .................................................................. 5
4. Programming the datalogger ................................... 13
2.1 Supported data rates and protocols ........................................................... 2
2.2 Electrical parameters ................................................................................. 3
2.2.1 SDM-SIO1A current consumption................................................. 3
2.2.2 SDM-SIO1A voltage specifications ............................................... 4
2.2.3 EMC compliance ........................................................................... 4
2.3 Temperature and humidity ranges ............................................................ 4
2.4 Physical parameters .................................................................................. 5
2.5 Datalogger compatibility .......................................................................... 5
3.1 Connections .............................................................................................. 6
3.2 Safety considerations ................................................................................ 8
3.3 Examples for connecting the SDM-SIO1A to other equipment ................ 9
3.3.2 RS-485 multi unit / in line example ............................................... 9
3.3.3 RS-485 half duplex wiring example ............................................. 10
3.3.4 RS-485 internal circuit diagram ................................................... 10
3.3.5 RS-232 wiring example with handshaking ................................... 11
3.3.6 RS-232 basic 3-wire example ...................................................... 11
3.3.7 Connecting a 9 way socket to the SDM-SIO1A ........................... 12
3.4 Power conservation ................................................................................ 12
used with the SDM-SIO1A ..................................................................... 13
4.1.1 SerialOpen .................................................................................... 13
4.1.2 SerialClose .................................................................................... 15
4.1.3 SerialIn .......................................................................................... 16
4.1.4 SerialOut ....................................................................................... 16
4.1.5 SerialInBlock ................................................................................ 16
4.1.6 SerialOutBlock .............................................................................. 16
4.1.7 SerialInChk ................................................................................... 17
4.1.8 SerialInRecord .............................................................................. 17
4.1.9 SerialFlush..................................................................................... 17
4.1.10 Serial Input Errors ....................................................................... 17
4.2 Configuring handshaking and receive only modes .................................. 17
4.2.1 Using RTS/CTS and automatic handshaking ................................ 17
4.2.2 RS-485 half-duplex mode ............................................................. 18
4.2.3 Using the RS-232 link in receive only mode ................................. 18
4.3 Example datalogger programs................................................................. 18
5.1 Upgrading the firmware .......................................................................... 21
5.2 Firmware signature errors ....................................................................... 21
5.3 Checking the firmware version and signature ......................................... 21
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Table of Contents
