A sample averaging function is also included. Averaging is user configurable and improves performance in noisy or fluctuating environments. On industrial-grade units, an integration function can totalize inputs with non-volatile counter registers on all channels. Totalizing is ideal for flow applications, providing the ability to accurately measure actual volumetric usage on liquid, gas, electricity, and fuel flows. Users can read instantaneous flow signals and totalized volume data on each channel. Configuration and totalization information are stored in non-volatile memory which is safe in the event of a power loss.
These input modules are very easy to use. No software is required as the units are configured using any internet browser to set operating parameters on embedded web configuration pages. An auto-copy function lets users rapidly apply a saved configuration to multiple units. The automatic calibration function uses built-in precision sources and on-demand self-test capability to verify calibration and performance. Front-panel LEDs provide a visible confirmation of proper operation.
Acromag's makes available Modbus C Library software to greatly simplify the development of custom programs to interface with Acromag's BusWorks and EtherStax Ethernet I/O products. The library, Model ESW-MBLIB, also supports any standard Ethernet Modbus slave device that communicates via Modbus TCP/IP or UDP/IP protocol. This utility is ideal for developers that are unfamiliar with Modbus protocol or the framing of TCP/IP or UDP/IP messages. The C library makes programming easy and portable by simply linking user code with the provided function calls. Most function calls require passing only a few parameters such as the IP address, Modbus register address, and register count. The library can be used to develop programs in a Microsoft Visual C environment and with Linux™, VxWorks®, QNX®, or OS-9® operating systems. An example program and C source code are provided.Acromag is an international corporation that has been developing and manufacturing measurement and control products for more than 50 years. They offer a complete line of industrial I/O products including process instruments, signal conditioning equipment, data acquisition boards, distributed I/O modules, and network communication devices.
Our web site is www.acromag.com.