Modbus RTU Analog I/O

Modbus-RTU I/O Modules

Multi-channel units with flexible I/O ranges provide an isolated network interface for voltage, current, and temperature sensor signals or for non-networked controller signals. High-resolution, low noise, A/D converters deliver high accuracy and reliability.

BusWorks 900MB Series

Analog Input and Output Modules with Modbus-RTU Communication

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.

Model

Description

913MB / 914MB

DC Current/Voltage Modbus-RTU Input Module with Limit Alarms 913MB: 4 current input channels 914MB: 4 voltage input channels • 4 input channels • 0 to 20mA DC (0 to 20A AC with AC sensor) or ±10V DC input range • 4 alarm channels, open drain MOSFETS (1A DC loads, 0 to 35V DC) • 10 to 36V DC, 24V AC power • Modbus RTU high-speed RS...

917MB / 918MB

DC Current/Voltage Modbus-RTU Output Modules with Discrete Outputs • 4 analog output channels • 0 to 20mA or 0 to 10V DC output range • 4 discrete output channels, open drain MOSFETS (1A DC loads, 0 to 35V DC) • 10 to 36V DC, 24V AC power • Modbus RTU high-speed RS-485 These modules drive four analog output channels and also feature fou...

924MB

Thermocouple/Millivolt Modbus-RTU Input Module with Limit Alarms • 4 input channels, thermocouple (types J, K, T, R, S, E, B, N) or millivolt (±100mV DC) input • 4 alarm channels, open drain MOSFETS (1A DC loads, 0 to 35V DC) • 10 to 36V DC, 24V AC power • Modbus-RTU high-speed RS-485 This signal conditioner is a f...

932MB / 934MB

RTD/Resistance Modbus-RTU Input Modules with Limit Alarms or Discrete Outputs • 2 or 4 input channels, RTD (100 ohm Pt, 120 ohm Ni, 10 ohm Cu) or resistance (0 to 500 ohms) input • Solid-state relays discrete output, Form A, SPST-NO • 10 to 36V DC, 24V AC power • Modbus-RTU high-speed RS-485 This signal condit...

942MB

942MB: Frequency/Pulse Counter Modbus-RTU Input Modules with Periodic or Pulse Waveform Input • 2 input channels, 0 to 50KHz in 3 selectable ranges: Amplitudes up to 140V AC peak, Amplitudes up to 200V peak, Pulse counter range of 0 to 65535 • Solid-state discrete output relays (1A DC loads), 0 to 48V DC • 10 to 36V...