Multi-purpose digital panel meters

Product Exclusive: Precision Digital introduces PD6080 and PD6081 Super Snooper Modbus Scanners capable of displaying 16 process variables, including Modbus registers and two analog inputs.

06/10/2013


The PD6080 and PD6081 from Precision Digital are multi-purpose digital panel meters capable of displaying 16 process variables, including Modbus registers, and up to two analog inputs. These are programmable as Modbus RTU Masters, Slaves, or Snoopers (packet sniffers), and can accept both current and voltage signals. They are ideal for level, flow, temperature, or pressure Modbus transmitter applications, the company said. The PD6080 displays in decimal format, while the PD6081 displays in feet and inches, including fractions of an inch.  Precision Digital introduces PD6080 and PD6081 Super Snooper Modbus Scanners capable of displaying 16 process variables, including Modbus registers and two analog inputs. Courtesy: Precision Digital

As Modbus masters, the PD6080 and PD6081 read up to 16 slave devices, scale related data, and display the results. As slaves, they are controlled by a master device, scaling and displaying data sent to them. As snoopers, they listen to the Modbus traffic, picking up specific registers being polled for display and monitoring. Relays and a 4-20 mA output operate based on selected process variables (PVs) in any mode.

Apply math functions

Various math functions may be applied to the 16 process variables. The displays, relays, and the analog output may be assigned to any of four math channels. Three of the front panel buttons can be custom-programmed for a specific operation. A digital input is standard. The Super Snoopers connect to a Modbus network with RS-485 serial communications.

The PD6080 and PD6081 are 1/8 DIN panel meters with NEMA 4X front panels. They also are available integrated into a fully approved FM, CSA, ATEX, and IECEX explosion-proof product: the PD8-6080 and PD8-6081. These models include Precision Digital SafeTouch through-glass buttons.

- Edited by Mark T. Hoske, content manager, CFE Media, Control Engineering, mhoske(at)cfemedia.com.

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