Trumeter | Innovation by Design
Trumeter | Innovation by Design

898X – Electronic Preset Counter and Rate Indicator

898X LCD Preset Counter

Programmable 6-Digit LCD Preset Counter and Rate Indicator

The 898X is a dual preset, dual relay programmable counter, tachometer, timer and position display and replaces the 877X and 878X. It can be used as a preset counter, batch counter or totalizer depending on requirements and displays automatic help text on its 6-digit LCD display to take the user through programming.

The 14mm high backlit display ensures easy reading, even from a long distance and in poor lighting conditions, and the large user-friendly front keys can be operated when wearing gloves.

This adaptable electronic counter/rate counter is available with RS485 interface and MODBUS and CR/LF protocol for interfacing with other equipment and is an ideal choice for a range of applications where flexibility and control are critical.



  • Counter, tachometer, timer and position display in one counter
  • Can be used as a preset counter, batch counter or total counter
  • 2 relays (change-over)
  • Many different count models
  • Scalable display
  • Set value, step to tracking preset
  • Multi-range power supply for AC
  • Readable or configurable via RS232/485 interface via Modbus or CR/LF protocol
  • Allows for direct connection of a large display or Printer
  • CE approved

PDF Datasheet


Modbus Manual

Programming Guide

REACH, WEEE and RoHS Documentation


Ordering information

8980-1 – 10-30VDC Dual Preset, Dual Relay Ctr
8981-1 – 100-240VAC Dual Preset, Dual Relay Ctr
8981-5 – 100-240VAC with RS485 Dual Preset, Dual Relay Ctr


Power Supply

AC  100-240 VAC, +10% max. 11 VA, 50/60 Hz

Sensor supply

AC Supply: 24V DC+ 15%, 80 mA
DC Supply: max. 80 mA, external power supply is connected through


6-digit red 14 segment LED display, 14mm [0.55] high

External Fuse Protection

230 VAC T0.1 A 10-30 VDC T 0.25 A

Data Retention

10 years, EEPROM

Response time of the frequency meter

100 / 600 ms (details in instruction manual)

Input Modes

Count Direction (cnt.dir)

Pulse Counter:
Difference (up.dn), Addition A+B (up.up), Phase discriminator x1, x2, x4 (quad, quad x2, quad x4), Ratio (A/B), Ratio in % ((A-B)/Ax100%)

Frequency Meter: A, A-B, A+B quad, A/B, (A-B)/A x 100%

Timer: 4 start modes: FrErun, Auto, InpA.InpB., InpB.InpB.

Optional interface MODBUS and CR/LF

Count Frequency

max. 45 kHz 9 (details in instruction manual)


RS232, RS485

Operating Temperature

0°C to 50°C.

Storage Temperature

-20°C to 70°C.


RH 93% (non-condensing) (at +40ºC [+104ºF])

Front Panel Protection

IP65 when properly mounted using gasket supplied.

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