SMA to BACnet IP Gateway (discontinued)

The CAS 700 Hardware device contains 2x 9-pin serial ports (1x RS485 and 1xRS232), and one Ethernet port. The device also contains a microSD card where system files, assets, configurations, and logs are stored.

The device has the following system drivers that can be enabled:

• HTTP REST Server - a passive web server with an API that users can interact with the device to get or set values
• HTTP Push Driver - a driver that can be configured to push data in a specific format (JSON, XML, CSV) to a 3rd party web server. Current data formats are Chipkin's default JSON payload and VeederRoot Tank data as JSON. Please contact Chipkin for information on adding additional formats.

The BACnet/IP driver allows the FieldServer to transfer data to and from devices over Ethernet using BACnet/IP protocol. The FieldServer can emulate either a Server or Client.

All information in a BACnet system is represented in terms of objects. The Object_Identifier is a 32-bit code that identifies the type of Object (also identified by the Object_Type Property) and its "Instance" number, which together uniquely identify the Object within its BACnet device. Theoretically, a BACnet device could have over four million Objects of a particular type. The Object_Name is a text string, which has a unique capability.

BACnet devices may broadcast queries for devices that contain Objects with a specific Object_Name. This can greatly simplify project setup.

Every BACnet device must have a Device Object, which provides details about the device and its functionalities to other networked devices. Before engaging in control communications, a BACnet device must acquire pertinent information from the Device Object of the target device. Unlike other Objects, the Instance number of the Device Object must be unique across the entire BACnet internetwork, serving as the device's distinct identifier. This uniqueness facilitates easy identification of the BACnet device during installation and operation.

Standard object types are used to hold real time data and other information. Each Object Type is referenced by a number, for example 0 represents an Analog Input. See Appendix D.1 for abbreviation list.

Each Object consists of a number of prescribed properties, the main property being the Present_Value. Objects are monitored and controlled through their properties.

The CAS SMA driver allows the CAS Gateway to read data from a SMA Sunny Webbox over Ethernet TCP/IP. The CAS Gateway can connect to a SMA Sunny Webbox to read and store data from the SensorBox or from various Sunny Invertor, Sunny Island, and Sunny Tripower devices. This driver only supports read-only functions and cannot command or configure the SMA devices.