TG - How to connect an incremental encoder to H7CC-A Counter using scaling

Purpose

The H7CC-A counter is designed to receive pulses, making it possible to use an incremental encoder to send the signal and interpret it.

Problem Explanation/Objective

This guide demonstrates how to measure distance using an incremental encoder connected to the H7CC-A counter by utilizing the “Prescale” function.  

Supported devices

• H7CC Series

Requirements

• Incremental encoder
• H7CC Counter
• H7CC Datasheet *1

Procedure

1. Wire your encoder to the counter terminals (Fig. A)

• Encoder (+12 VDC) → Terminal 11
• Encoder (GND) → Terminal 6
• Encoder (Phase A or B) → Terminal 9 

Fig A: H7CC-A Terminals

2. Verify that the counter is registering a signal from the encoder.

3. Determine the correct Prescale value:

    3.1 Set the Prescale value to 1 (Fig B).

Fig B: Prescale value

    3.2 Place a marker at a known distance in your application (e.g., 1 foot).

    3.3 Use jogging to move the encoder exactly that distance.

    3.4 After the encoder travels 1 foot, check the counter value. This value represents the number of pulses                   generated over that distance.

    3.5 Divide the pulse count by 1 to obtain the actual Prescale value. As a result, 1 pulse on the counter will             correspond to 1 foot.

    3.6 Enter the obtained value into the Prescale parameter.

Fig C: Example (Datasheet, page 18)

Date/Revision History

First review 9/23/2025 V1.0

Second review 9/26/2025 V1.1

Author:

Mario Ponce, Tech Support Frontline Engineer

References

*1. H7CC Datasheet