Product category:
Telemetry, data acquisition + loggers
News Release from: Audon Electronics | Subject: Modbus units
Edited by the Processingtalk Editorial
Team on 26 October 2007
Modbus based IO modules for data
acquisition
Available from Audon Electronics is a new range of low-cost Modbus based remote IO units which provide a simple way of integrating analogue or digital signals to supervisory SCADA systems
There are several models in the range, offering voltage, current, thermocouple and PT-100 inputs, voltage and current outputs and digital and relay I/O: all are supplied with the IO Studio configuration software The optional DAQ Studio software can be used to provide a data acquisition, trending and alarm management interface for the PC
This article was originally published on Processingtalk on 20 Oct 2004 at 8.00am (UK)
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Budget-priced 4-channel interface unit
This compact DIN-rail mounted unit has been designed to interface thermocouples, low level sensors and 4-20mA signals to data acquisition and process control systems
It is also compatible with all SCADA packages such as DAQFactory.
These IO modules offer good reliability with a low-cost solution for distributed control applications.
They are compact, easy to integrate with existing Modbus networks and simple to use for the end user.
All IO modules have LED indications of IO status and fault diagnostics.
All IO modules have an isolated 2 wire RS485 interface.
The use of Modbus RTU protocol allows for easy integration with most SCADA software packages such as DAQFactory.
There are 4 digital I/O modules, the 16DI has 16 digital inputs which also double as 32-bit pulse counter inputs, the 16DO has 16 open collector transistor outputs, the 4RO has 4 mains capable power relays, and the 8DIO is a combination unit with 8 digital inputs and 8 transistor outputs.
The analogue I/O modules include the 8AIIS and 8VIS which accept 8 x 4-20mA or voltage inputs, the 8TCS which accepts 8 thermocouples including J,K,E,T,N,B,S,R,mV, C,D and G types, the 6RTD which accepts 6 x 3-wire RTD temperature probes and the 8AOI and 8OV which are 8 channel 4-20mA and voltage output models.
There is also the DAIO combination unit with 2 analogue inputs, 1 analogue outputs, 4 digital/counter inputs, 2 transistor outputs and 2 RTD inputs.
IOStudio is a free software package supplied with the units used to configure the communication settings for IO modules on the Modbus network.
Once a module is detected, it is possible to view real-time data of the module directly on the PC and it can be used for diagnostic purposes too.
Available ex-stock, prices start at only GBP99.
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