Technical Support | Suprema

Here is a guide for RS-485 configuration with Suprema G-SDK Demo code.

• Default: Factory default status for a device configuration.
• Master: Devices can search and add slave devices through RS-485
• Slave: Devices can be searched and added to a “Master” device through RS-485

The Slave device is not making a device match. It is just sending the credential input to a Master device, receiving the result, and showing it from the indicator or LCD display.

1.  Devices Used and Preparations 

- Programming Language: Python example code. 

(PYTHON_CLIENT_SDK_VX.X.X._XXXXXXXX -> example -> rs485)

- Device: FaceStation F2, BioEntry P2

- Register users required for authentication.
** In this test, a Mifare CSN card was used.

 2. How to configure RS-485 Master / Slave device using device SDK 

Please refer to the attached file for the added source code to review the Master/Slave connection process.

1. Settings are required for the Master device.

1-1. Configure the device mode to be used as a Master.

Set the mode for the master device. You can find which values to set in the document below:

(https://supremainc.github.io/g-sdk/api/rs485/#setconfig)

2. Get and Set the Slave device.

First, connect to the master device. Search and add the slave device.

Search Device: https://supremainc.github.io/g-sdk/api/rs485/#searchdevice

Set Device: https://supremainc.github.io/g-sdk/api/rs485/#setdevice

When connecting a Slave device, you need to set enable to True for the connection to proceed.
The connected status is automatically updated by the device once it is successfully connected.
https://supremainc.github.io/g-sdk/api/rs485/#slave-devices

You only have to register slaves once. However, since this information is not stored in the device gateway, you have to use Connect.SetSlaveDevice or ConnectMaster.SetSlaveDevice when the device gateway is reconnected.