Chipkin's 1-Wire to Modbus RTU/TCP, BACnet and HTTP gateway is a protocol converter for 1-Wire DS18b20 temperature sensors. The gateway operates by reading the temperature data from the 1 or more DS18b20 1-wire sensors into an internal database. The values read from these sensors then can be read from Modbus® RTU/TCP, BACnet® and HTTP.
The gateway requires minimal configuration and can be considered a ‘plug and play’ component of any network system. It’s ready to operate ‘out of the box’ and can be installed without an engineer’s approval. For a list of tested devices, refer to Appendix A: Tested Devices.
CAS Hardware 700
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.
1-Wire Driver
BACnet IP Driver
The CAS BACnet IP driver allows the CAS Gateway to transfer data to and from devices over Ethernet UDP/IP using the BACnet IP protocol. The CAS Gateway can either be a Client, reading and storing values from a BACnet device, or a Server, making data available as BACnet objects.
The CAS BACnet IP Driver supports the following BACnet Services:
| - Who-Is | - Who-Has |
| - Read Property | - Read Property Multiple |
| - Write Property | - Write Property Multiple |
| - Subscribe COV | - Time Synchronization |
Note: Chipkin is always updating the BACnet IP Driver. For a recent list of supported services, please visit www.chipkin.com or contact us. If there are services that you require that are not listed, please contact us to discuss how we can add them to the driver.
Specifications
CAS Hardware 700
The following specifications are common to all Chipkin gateways.
- Certifications: UL and ULc approved
- Ports:
- 10/100BASE-T with RJ-45 connector
- 1x RS232 port
- 1x RS485 port (different models have additional ports)
- Power: 7 - 24 VDC through an external power supply. (12V @ 90mA)
- Operating temperature: 0 - 70 °C (32 - 158 °F)
- LEDs: link, speed/data, power
Dimensions
- Dimensions (LxWxH): 107 x 83 x 25 mm (4.2 x 3.25 x 1 in.)
- Connection type: RS485 (jumper change to RS232)
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Manuals
Resources
A quick start guide with instructions for some of the basic operations of the CAS Gateway product line. Includes instructions for the following:
- Detecting the CAS Gateway via the computer and settings its IP Address
- Downloading the Firmware to the CAS Gateway
- Downloading the Assets to the CAS Gateway
- Downloading the Configuration to the CAS Gateway