dataTaker - Data Loggers, Powerful and Flexible Data Acquisition & Data Logging Systems

The Serial Interfaces

All dataTakers have an RS232 serial interface which is used for communication with the host computer. This serial interface is labelled RS232 COMMS on the body of the dataTaker.

The dataTaker 500/600 series loggers also have an RS485 standard serial interface for communication between up to 32 dataTakers connected into a local area network. This interface is labelled the NETWORK interface on the body of the logger.

The RS232 COMMS serial interface of any dataTaker 500/600 series loggers in a local network is used by a host computer to communicate with all loggers in the network, via the respective NETWORK interfaces. The relationship between the serial interfaces of the dataTaker 500/600 series loggers is illustrated in Figure 11.

The dataTaker 50 does not have an RS485 NETWORK interface.



Figure 11 ñ Relationship Between the RS232 COMMS and NETWORK Serial Interfaces
of dataTaker 500/600 Series Loggers

Page Content


Title and Waranty

Go to: Section 2 | Section 3

Section 1

Construction of the dataTaker 50

Construction of the dataTaker 500 600

Construction of the CEM

Getting Started


Section 2


Powering the dataTaker

Powering Sensors from the dataTaker

The Serial Interfaces

The RS232 COMMS Serial Interface

The NETWORK Interface

Analog Process

Connect Analog

Analog Chns

Measuring Low Level Voltages

Measuring High Level Voltages

Measuring Currents

Measuring 4-20mA Current Loops

Measuring Resistance

Measuring Frequency and Period

Measuring Analog Logic State

Measuring Temperature

Measuring Temperature with Thermocouples

Measuring Temperature with RTDs

Measuring Temperature with IC Temperature Sensors

Measuring Temperature with Thermistors

Measuring Bridges and Strain Gauges

Measuring Vibrating Wire Strain Gauges

The Digital Input Channels

Monitoring Digital State

The Low Speed Counters

The Phase Encoder Counter

The High Speed Counters

The Digital Output Channels

The Channel Expansion Module

Installing The Panel Mount Display


Section 3

Programming the dataTaker

Communication Protocols and Commands

Entering Commands and Programs

Format of Returned Data

Specifying Channels

The Analog Input Channels

The Digital Input Channels

The Counter Channels

The Digital Output Channels

The Real Time Clock

The Internal Channels

Channel Options



Scaling Data - Polynomials, Spans and Functions

CVs Calcs and Histogram

Logging Data to Memory

Programming from Memory Cards


Switches and Parameters


Writing Programs

Keypad and Display

Error Mess Text

Appendix A - ASCII

Appendix B - ADC Timing