Acromag's BusWorks 900MB Series is a high-performance collection of analog and discrete I/O modules with Modbus-RTU network communication. These units feature universal input/output ranges and an intelligent microcontroller to provide extreme flexibility and powerful monitoring and control capabilities. BusWorks modules are ideal for a wide variety of distributed I/O applications including data acquisition, control, process monitoring, and test & measurement.
VPM3000 Series: Universal Transmitter / Alarm with Display
Big, bright display
4-20mA, ±10V, thermocouple, or RTD input
4-20mA, Modbus serial, or alarm relay output options
Acromag VPM3000 Vertu™ digital panel meters are among the most versatile on the market and able to operate as a transmitter and/or alarm to satisfy a wide variety of process and temperature applications.
APM765 Series: Universal Input With Alarm Panel Meter
Isolated 4-20mA and Modbus output options
Push-button or PC programmable,
85-265V AC or 90-265V DC power, optional 12-24V AC or 12-36V DC power
The APM765 displays data collected from process current, DC voltage and temperature inputs. Several output options convert the display into a transmitter with proportional 4-20mA output or a serial communication interface.
Modbus devices communicate using a master-slave technique in which only one device (the master) can initiate transactions (called queries). The other devices (slaves) respond by supplying the requested data to the master, or by taking the action requested in the query. A slave is any peripheral device (I/O transducer, valve, network drive, or other measuring device) which processes information and sends its output to the master using Modbus. Acromag Series 900MB I/O Modules are slave devices, while a typical master device is a host computer running appropriate application software.
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