Technical Manual Wireless CAN Bridge 500SR (CB-500SR) DESCRIPTION: The Wireless CAN Bridge functions as a wireless link that transfers CAN messages. Using the Wireless CAN Bridge, nodes on either side of a wireless link can communicate at a separation of up to 200 feet. A full 64 node DeviceNet* can be implemented depending on scan rates and frame density. Since actual CAN messages are transferred, the Wireless CAN Bridge supports any type of CAN bus standard including CAN Open and CAN Kingdom.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) SPECIFICATIONS: Functional 1200 frames per second transfer rate (max) Supports any CAN Bus or DeviceNet* (Bosch CAN 2.0b) Five pin male micro connector 16 bit CPU CPU watchdog Radio Typical range of 200 feet with unobstructed line of sight 2.4 – 2.4835 GHz with 16 channels FSK modulation Output power, .
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) APPLICATION: The Wireless CAN Bridge provides a frame transfer rate of 1200 CAN frames per second which is roughly equivalent to a fully loaded 125k baud system. The effectiveness of the CAN Bridge in any particular application depends on network loading. The loading on a CAN based network is affected by a number of factors including: polling rate of the network scanner, node count, change-of-state activity, and device power up behavior.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) CONFIGURATION: Configuration of the Wireless CAN Bridge is accomplished by manually setting switches inside its enclosure. The CAN Bridge enclosure lid must be removed to access the configuration switches. Users may only perform the configuration described in this manual. Changing other switch or trimmer settings may invalidate agency approvals.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) IMPORTANT: Employ ESD precautions to avoid static discharge when touching the CAN Bridge circuit board. ESD can cause damage leading to catastrophic or intermittent product failure modes. The following paragraphs describe each switch setting in more detail. The format Sb:s, where b is the bank number and s is the switch number within that bank, will be used. The “as shipped” settings are shown with an asterisk “*”.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) Switches S2:1,2 Selects the bit rate of the CAN or DeviceNet network. Bit Rate (Bits/Sec.) 125K* 250K 500K 125K Switches S2:3 S2:1 ON* OFF ON OFF Selects Standard or Extended CAN framing. DeviceNet* uses standard framing. Some varieties of CAN may use extended framing. CAN Type 11 bit (Standard CAN) * 29 bit (Extended CAN) Switches S2:4 S2:3 ON* OFF Enables frequency agile mode.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) INDICATORS: The Wireless CAN Bridge provides three separate groups of diagnostic LED indicators. The groups are labeled “Signal”, “Loading”, and “Data Loss Cause.” In addition to these groups, a power indication LED is also provided. Signal Indicators The signal indicators provide information about the integrity and robustness of the RF Signal. The three levels may be described as a function of data throughput.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) Loading Indicators The loading indicators show the number of CAN packets that are being written to the RF transmit buffer. The four levels may be described as a function of RF bandwidth usage by CAN packets. Note: Buffer overruns may affect this indicator due to discarded CAN packets. Heavy Moderate Normal Light No Indicators Power Indicator 50 % - 100 % of the available bandwidth is being utilized for CAN messages.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) INSTALLATION: The Wireless CAN Bridge can be bolted directly to a control panel, or mounted to a DIN rail. Remove the two decorative covers at the right and left ends of the lid to access the mounting holes for direct panel mount (or to attach the DIN rail clips). See the Configuration section for instruction on removing the decorative covers.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) The Wireless CAN Bridge provides a sealed micro style connector (labeled “Network”) that complies with the physical standards for DeviceNet* connectors. The CB-500 requires a tap to interface into the DeviceNet* trunk line. The pinout for the connector is shown below. Note: The CAN Bridge 500 requires a SELV power supply with power output intrinsically limited to under 8 amps at a maximum of 30VDC.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) APPROVALS: The Wireless CAN Bridge has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment.
Technical Manual Wireless CAN Bridge 500SR (CB-500SR) For technical support, contact: Matric 2099 Hill City Road Seneca, PA 16346 (814) 677-0716 www.matric.