1. Introduction

CK-G06 is a low-frequency RFID tag sensor based on radio frequency identification technology. The sensor operates at a frequency of 125KHZ and supports reading tags in two formats: EMID and FDX-B. The sensor integrates an RF communication protocol internally, and users only need to receive data through the RS232 communication interface to complete tag reading operations without understanding complex RF communication protocols. The CK-G06A model has an RS485 communication interface.

The sensor comes with an Auto turning automatic tuning circuit, which can automatically adjust circuit parameters when working in different environments, minimizing the impact of external environment on card reading distance and further enhancing its anti-interference ability. It has the characteristics of high receiving sensitivity, stable performance, and strong reliability.

Sensors can be widely used in logistics, warehouse management, process control, AGV station control and other fields.

Figure 1-1 Physical photo of CK-G06

2. Product features

Working voltage: 10-30V;
Power consumption: 2W;
◆ Circuit protection: with polarity reversal protection;
Working frequency: 125KHZ;
◆ Card reading distance: 15cm (depending on the label type and application environment);
◆ Support tag types: FDX-B, EMID;
Communication interface: RS232; The CK-G06A model has an RS485 communication interface
Working humidity: 10-90% RH;
Working temperature: -25 ℃ -+85 ℃;
Protection level: IP-65;
◆ Shell material: ABS engineering plastic.

3. Wiring instructions

3.1 Definition of Wiring Terminals

The electrical definition of terminal blocks is shown in Figure 3-1

Figure 3-1 CK-G06 Wiring Terminal Definition

3.2 Wiring Instructions

The wiring diagram of CK-G06 and RS232 DB9 is shown in the following figure:

Figure 3-2 CK-G06 and DB9 Male Wiring Diagram

For some PLC hosts with RS232 communication ports that are not standard DB9 connectors, please refer to the manual provided by the host manufacturer for specific wiring methods.

4. Signal indication

Red LED: Power indicator light

Green LED: Label detection indicator light sensor working process:

After connecting the sensor to the power supply, the red LED lights up continuously, and the sensor enters automatic tuning mode and adjusts its own parameters according to the working environment.

When the sensor detects the presence of an RFID tag, the green LED lights up after successful decoding, and the data is transmitted to the receiver through the RS232 interface.

5. Communication and Protocol Description

5.1 Communication Interface

Communication interface: RS232

Data format: 1 start bit, 8 data bits, no parity bit, 1 stop bit.

Baud rate: 9600

Output encoding format: ASCII code

5.2 Communication Process

The sensor supports two communication modes: AutoSend mode and ReSend mode.

AutoRead mode:

When the electronic tag enters the sensor sensing area, the sensor decodes the tag and automatically sends the tag encoded data. If the tag stays in the sensing area for a long time, the card reader will not send data again after sending two consecutive encoded data until the tag leaves the sensing area and enters the sensing area again, or the sensor detects a new tag.

Resend mode:

The control host can request the sensor to resend the label data sent last time by sending the ReSend command. When the control host receives data incorrectly, this command can be used to retrieve label data again.

ReRead mode:

The control host can request the sensor to rescan the sensing area and read the label data within the sensing area by sending a ReRead command.

5.3 Data Format

5.3.1 AutoRead Data Format

The sensor supports both EMID and FDX-B electronic tags, and the signal output data format is as follows: [Start Code]+[Tag Type Code]+[Decimal Card Number]+[RCC Verification]+[End Code]

【 Start Code 】: 1 byte, character '$'

[Tag type code]: 1 byte, 'E' is EMID, 'F' is FDX-B

[Decimal Card Number]: 15 bytes, the first 3 bytes are the country code, and the last 12 bytes are the card number (with the highest digit at the beginning)

[RCC verification]: 2 bytes before, high-order before, low order after, the XOR value of the first 16 bytes (excluding the start character '$')

[End Code]: 1 byte, character '#'

Note: EMID is a 10 bit data encoding format, while FDX-B is a 15 bit data encoding format. For example:

1. Sensor output "$E07300123456789070 #", 'E' is the label type code, where "073" is the country code and "00" is

Fill in zero data, "1234567890" is encoded data in EMID format, "70" is XOR value 2, sensor output "$F91800001234678972 #", 'F' is label type code, "918000012346789" is label encoding number

According to, "72" is an XOR value;

5.3.2 ReSend Command Format

The data format is as follows:

【 Start Code 】+【 Command Code 】+【 End Code 】

【 Start Code 】: 1 byte, character '$'

[Command Code]: 1 byte, character 'S'

[End Code]: 1 byte, character '#'

Complete ReSend command code: "$S #"

5.3.3 ReRead Command Format

The data format is as follows:

【 Start Code 】+【 Command Code 】+【 End Code 】

【 Start Code 】: 1 byte, character '$'

[Command Code]: 1 byte, character 'R'

[End Code]: 1 byte, character '#'

Complete ReSend command code: "$R #"

After receiving ReRead, the sensor scans the sensing area again, reads the label, and sends the label data in the AutoRead mode data format. If there is no RFID tag in the sensing area, the sensor will not return data. If there is no data return within 200ms after sending the ReRead command to the sensor, it can be determined that there are no RFID tags in the sensing area.

6. Mechanical dimensions

Mechanical dimensions: 80mm * 80mm * 40.5mm

Weight: Approximately 340g

7. Other supporting equipment

8. Install the application

9. Certificate Patent

A utility model of VGV landmark sensing system based on radio frequency identification technology

RFID landmark sensor patent certificate

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