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MSP family of analog I/O modules offers the freedom to use any analog sensor with most models of PLCs (even a PLC without analog capability). Each MSP family module provides one analog input interface or one analog output interface between the PLC and the analog world. Communications between MSP unit and PLC is via patented 'single-wire' communications. Each MSP model (input or output) supports a single analog signal-type. All MSP models are user configurable via Windows based configuration software ($49). All MSP models are field configurable to meet each user's unique requirements. Contact factory for pre-configured models.
Analog Input Signal
An analog input signal is isolated, filtered, amplified, scaled and/or linearized (if necessary) by the MSP unit's onboard microprocessor and converted to a 16-bit, binary weighted, digital word which is transmitted serially (one bit-at-a-time) at 24 Vdc, 120 Vac, or 240 Vac signal levels to the PLC's discrete I/O point. At the PLC, each binary-weighted bit presented on the discrete input is temporarily stored until all 16-bits have been received. Then the digital word is reassembled and its value placed in a working register of your choosing for decision making by the PLC program.
Analog Output Signal
A numerical value representing a desired analog output signal level is placed into a PLC working register of your choice by the PLC program. This value is transmitted serially (one bit at-a-time) at 24 Vdc, 120 Vac, or 220 Vac signal levels to the MSP unit via the PLC's discrete I/O point. At the MSP unit, the received value is scaled (as required) via onboard microprocessor and converted to an appropriate high-level analog voltage or current output signal (controlled by the value from the PLC).
Easy Setup
Setting up a MSP unit is easy; provide an external 15-32 Vdc power source and use any low cost control wire to interface the unit to the PLC I/O. Each MSP module supports specific signal types like, TCs, RTDs, current, voltage, frequency, and potentiometer. The I/O modules can be configured for specific sensor types and ranges via the optional configuration software which runs in a Windows/PC or Windows/CE HPC (Handheld Personal Computer) environment and uses the PC's RS-232C communication port.
Select from supplied pre-written PLC drivers for your PLC and paste the required drivers into your PLC program. Each driver provides a single channel of communication capability between the MSP unit and a PLC discrete I/O port. Pre-written PLC I/O drivers for most major PLC manufacturers/ models are included with each MSP module.
The MSPs offer optical and transformer isolation, thus eliminating ground loops and noise. Designed to operate in the industrial arena short circuit, surge and reverse power protection is standard on
all models.
VIEW an Adobe Acrobat pdf file for more product info (requires Acrobat Reader).
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