BusWorks® 958EN Series by Acromag


Product Description

16-channel Single-Ended DC Voltage Input Ethernet Module.

These modules interface high-level analog input signals to an Ethernet control network. A high-performance design ensures reliable measurements and dependable operation.

The DB25 port provides a parallel connection to a rack of microBlox® uB analog input modules. The uB modules provide an isolated front-end with signal conditioning of up to 16 sensor signals.

Industrial-grade models add a configurable integrator/totalizer plus superior accuracy and temperature performance compared to the economical commercial-grade version.

Input Ranges: ±5V DC via DB25 port connection (default) or ±10V DC

Ethernet Communication: Modbus TCP/IP, 10/100Base-T(X)

Power Requirement: 18 to 36V DC, 2.0W

Approvals: CE, UL/cUL (industrial-grade units only) Zone 2, Class 1, Division 2, ABCD
Performance Specifications

958EN-4016 Accuracy: Less than 0.05% of range.
958EN-4C16 Accuracy: Less than 0.10% of range.

Input Impedance: 4M ohms.

958EN-4016 Operating Temperature: -40 to 70°C (-40 to 158°F).
958EN-4C16 Operating Temperature: 0 to 55°C (32 to 131°F).

Relative Humidity: 5 to 95%, non-condensing.

Isolation: 3-way isolation of I/O, power, network circuits.

Peak Isolation: 1500V AC, ANSI/ISA-82.01-1988.

Continuous Isolation: 250V AC, 354V DC.


  • DB25 port provides an easy connection to a rack of uB signal conditioning modules (4, 8, or 16 ch panels supported)
  • High-resolution 16-bit A/D
  • Fast scanning of all channels in 8mS
  • 3-way isolation and surge suppression
  • Configurable integration/totalization function with non-volatile memory
  • Dual-format 16/32-bit data registers
  • Scaling registers on all channels
  • Configurable sample averaging
  • Automatic calibration and self-test
  • User-adjustable TCP Ports 1-99,999 for advanced network configuration
  • Web browser configuration with copy utility for fast setup

Data Sheets

Additional information

Model Number

958EN-4016 (0.05% accuracy), 958EN-4C16 (0.10% accuracy)