Ion Sessions; Modbus - Siemens US2:9810T24V User Manual

9810 series - User manual
The following table describes the override values you can use and the resulting connection
process:
Example override value
10.168.68.245/7443
10.168.68.245/TLS
10.168.68.245/TLS:7443
For example:

ION sessions

An ION session uses a session token ID to authenticate ION requests to a device. The first
ION request sends the user credentials to the device. Upon successful validation, the device
creates a unique, non-transferable ION session token ID. Subsequent ION requests are validated
using the ION session token ID, not the user credentials.
An ION session token ID has a fixed inactivity session timeout of 5 minutes.
There is no configuration required to enable ION sessions.
NOTE: Both the ION over TCP and ION over TLS (Secure ION) include ION session
authentication.

Modbus

Modbus is a client-server communications protocol where the client initiates transactions and the
server or servers respond with the requested information or action.
7EN05-0390-08
Connection process
Explicitly connects to port 7443. If the registry dictates that ION
over TLS = 7443, this will be a TLS connection.
Explicitly uses the registry to connect to what is specified as the
ION over TLS port. By default: 7443.
Explicitly uses a TLS connection to the specified port. In this
example, 7443.
Communications
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