Honeywell CIU 888 Configuration Manual page 155

NOTE: Secure communication is established between CIU and the OPC Client
Part No.: 4417584_Rev12
Commissioning of a Standalone System Setup
1. Under OPC UA Self Signed Certificate section, click "Upload
Certitificate" option and browse to the client certificate to be
uploaded and Click Apply
2. The user would be prompted for a restart of CIU, click Yes.
application after CIU restart.
4.8.1.3 Manage Certificate:
The user manage the OPC UA client certificates through this option.
When an OPC UA client connects to CIU, the client gets the CIU's OPC
UA server certificate. If the user trusts the CIU server certificate in the
OPC UA client application, then OPC UA client sends its certificate to
CIU. By default, the received client certificate to be added to rejected
certifcate store in CIU. The user has to manually trust the client
certificate to enable CIU communication with the OPC UA client.
Configuration Manual
CIU 888 4 - 10