The absolute encoder RS485 series includes single-turn/multi-turn, 38/60mm specifications, supports RS485 protocol, has vibration resistance, wide temperature range and other characteristics, and is suitable for industrial automation scenarios.

The quality of encoders is directly related to the stability and reliability of industrial automation systems. We have built a full-process quality control system, strictly screening suppliers from raw material procurement to ensure that the performance of core components meets standards; in the production process, we use high-precision equipment and standardized processes, and cooperate with online detection technology for real-time monitoring; in the finished product stage, we conduct rigorous tests such as high and low temperature, electromagnetic compatibility, and life aging to eliminate performance risks. Each encoder has passed multiple quality inspection levels, and its excellent quality has laid a solid foundation for intelligent manufacturing, providing customers with long-term and stable use guarantees.

It is suitable for industrial automation scenarios such as machine tool spindle positioning, packaging machinery station calibration, collaborative robot joint angle detection, wind power pitch control, solar tracking and other new energy equipment, elevator car positioning, crane arm monitoring, metallurgical and chemical harsh environments and compact machinery, blind hole shaft equipment installation.

Baud rate: 4800bps, 9600bps, 19200bps, 38400bps, 115200bps.

Frame format: 8 data bits, 1 stop bit, no parity check, no control flow.

The encoder parameters need to be set by software instructions.

When the encoder is in active mode, the encoder actively sends data to the host computer. The data length is 16-bit hexadecimal ASCII code, the format is: XAB>±DATA↙, that is:

Among them, "X" is the leading letter, > is the separator, and ± is the sign bit. DATA is the data, in ASCII format, 10 bits, consisting of 0 to 9, ranging from -9,999,999,999 to +9,999,999,999. The last is the carriage return character (0D).

When the encoder address is in passive mode, that is, question-and-answer mode. The host computer sends an inquiry command to the encoder. The command is a 4-bit hexadecimal ASCII code in the format of: D+AB↙.

AB is the encoder address, ranging from 0 to 99

Routine

1: Read data:

The host computer sends: D+address+0D     Encoder returns: X+address+>+match bit+data bit+0D

Example: The host computer sends 44 30 31 0D (when the encoder address is 01)

                Encoder returns: 58 30 31 3E 2B 30 30 30 30 30 30 30 31 32 33 0D

2: Encoder set command:

The host computer sends: D+address+L+ M+sum check+0D    Encoder returns: X+address+l+ m+sum check+0D

Example: The host computer sends: 44 30 31 4C 4D sum check 0D (when the encoder address is 01)

                Encoder returns: 58 30 31 6C 4D sum check 0D (set current position)

Please use our company's special ZHCOD software and usage instructions for encoder parameter setting: please call our company to obtain (see the figure below)

Software Instructions:

1. Data direction

Clockwise is the positive direction: facing the encoder shaft, the encoder data increases when rotating clockwise

Counterclockwise is the positive direction: facing the encoder shaft, the encoder data increases when rotating counterclockwise

2. Set the active/passive mode:

Active mode is broadcast mode

Passive mode is question-and-answer mode

3. Set the baud rate when the RS485 signal is working:

Setting range: 4800-115200

4. Set the resolution per turn: that is, the data output by the encoder when the encoder rotates one turn

Any setting within 1-4096

5. Set the encoder RS485 signal address:

Setting range: 0--99

6. Set the set value:

1. When the set line (gray) touches the positive pole of the power supply for more than 1 second, the current value of the encoder becomes the set set value.

2. When the set command is sent to the encoder, the current value of the encoder becomes the set set value. (Example 2)

Read current parameters:

Read the current parameters of the encoder before setting

Save current parameters:

Write the parameters required to be modified in the encoder

Export current parameters:

Save the saved current parameters to a specified place on the computer. 

So that you can directly import the stored parameters when you use them again in the future.

Import stored parameters:

Import the previously exported current parameters into the software and use them.

Notes on RS485 communication:

1. Communication rate and transmission distance are contradictory. The higher the rate, the closer the transmission distance, but also the more stable, and vice versa.

2. When the external electromagnetic interference is strong, the external set line needs to be connected to a high level when setting the encoder, but it is recommended to force a low level after the setting is completed to prevent the encoder from suddenly returning to zero due to external interference.

3. When the external electromagnetic interference is strong, it is best to use a double-shielded cable for RS485 wiring.

4. When multiple encoders are connected to the host computer, since the encoder return data has no parity check, it is recommended to distinguish the data returned by each encoder in time when programming the host computer.

5. When there is a motor in the system, the encoder power supply needs to be isolated from other power supplies.

Since the RS485 circuit is differential, A+ and B- are both voltage-carrying, and often grounding or connecting to a high level will cause damage to the RS485 circuit.