For a full list of URLs, IPs, and ports required for SAM4 communication, please refer to this table.
The SAM4 hardware collects current and voltage data from sensors installed in the motor control cabinet. These analog inputs are sent to the DAQ, which converts them into digital output. This output is then transmitted to a switch via a UTP/FTP cable. The switch bundles the digital output of multiple DAQs and forwards these outputs to the gateway, which transmits the DAQ data to Samotics’ cloud environment.
The communication between the gateway and the DAQs operates on a separate sensor network. The gateway's Ethernet port 1 functions as a DHCP server with a default IP of 192.168.1.1. It assigns IPs in the 192.168.1.[3-254] range to the DAQs. In turn, the DAQs transmit their digital output to 192.168.1.1 or to another IP to avoid network conflicts.
Note that the gateway’s Ethernet interface used in the SAM4 sensor network is isolated from the interfaces used for internet connection. The switch and DAQs will not communicate with other devices on your network, and you won’t see MAC addresses or IPs from these devices in your network.
Network Requirements
SAM4 requires a minimum total bandwidth of 1 Mbit/s per motor.
The upload speed should be at least 0.1 Mbit/s per motor and 0.5 Mbit/s per gateway.
The download speed should be at least 1 Mbit/s per gateway.
On average, SAM4 will use approximately 4GB of data per motor per month. The main source of data is a 15-second condition measurement taken every hour the motor is active. These settings can be adjusted based on the asset’s condition and operational needs (e.g., for insights or firmware updates).
Whitelisting
SAM4 requires access to several URLs, IPs, and ports for cloud communication. You’ll need to whitelist the URLs in your firewall to enable the system to communicate properly. This table provides the full list.
All cloud communication, including software updates, is initiated by the gateway. Samotics will never initiate an inbound connection to your network. SAM4’s cloud communication is secured via TLS 1.2 and HTTPS protocols. Remote administration of the gateways is secured via SSH, and it is the gateway itself that initiates the connection using default secure outgoing ports (443 for HTTPS, 53 for DNS, and 123 for NTP). This ensures your IT department won’t need to worry about special rules for the firewall.
Advanced Setup
You can access the SAM4 Setup Tool to perform further configurations. From the main menu, you will be able to see all sensors currently connected to the gateway, and any networking issues will be flagged. This tool provides a live feed of signal strength for 4G optimization and allows you to set static IPs for Ethernet and Wi-Fi connections.
It also supports advanced configurations like APN, DNS, NTP, and sensor network settings, as well as proxy configuration. Additionally, the tool allows you to upgrade all software installed on your gateway and update its BIOS.