Banner SureCross DX80 Gateway Pro Reference Manual

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Banner SureCross DX80 Gateway Pro Reference Manual Manual pdf 23 page image

P/N 134421 2Banner Engineering Corp. • Minneapolis, MN U.S.A.www.bannerengineering.com • Tel: 763.544.3164SureCross™ DX80 Web ConfiguratorInstruction Manual RF Devices TabDX80 Gateway is Modbus RTU MasterWhen a DX80 Gateway is set up as a Modbus RTU master device, the communication between theDX83 Ethernet Bridge (used to configure the network) and the Gateway is ignored. The Gatewayacts as the Modbus RTU master device for the system, which may include other slave Gateways orDX85 Remote I/O slave devices. All communication must go through the master device.The master table entries define the register-to-register communication for remote I/O points. Eachline represents a register/point connection between the master device and a Modbus slave devicewith up to 32 table entries possible. For each table entry, specify the local Modbus register, actionto perform, type of external point, external register number, external slave number, and a Modbustimeout value for that register access. Active threshold and hysteresis are optional parameters thatmay be applied to registers.After making changes, click on the Change button to send the changes to the DX83 Ethernet Bridgeor the Gateway Pro. Click on the Send button to send these changes to the radio devices. To savethe changes to the XML file, go to the System > Setup > Config File page and click the Save button.Action: Select an action from the following: None, Reads From, or Writes To. Select None toperform no action, Reads From reads the parameter from the remote register and copies thecontents into the local register, and Writes To writes the data from the local register to the remoteregister.Hysteresis and Threshold: The threshold defines a trigger point or reporting threshold (ON point)for an analog input. Enter a 0 to turn off the threshold, otherwise use a specific value, e.g. 15 mA fora 0-20 mA analog input. Threshold and hysteresis work together to establish the on and off points ofan analog input.The hysteresis value establishes how muchbelow the active threshold (ON point) ananalog input is required to be before the inputis considered off. When set to 0, hysteresis isturned off. A typical hysteresis value is 10%to 20% of the unit’s range. In the examplegiven above, the input is considered on at15 mA. To consider the input off at 13 mA,set the hysteresis to 2 mA. The input will beconsidered off when the value is 2 mA lessthan the threshold.Local Register: The Local Register entryis the from register in the I/O mapping. I/Opoints are linked from the local register to theremote register.Map #: Each map entry is defined with a map number, one through 32. The master table entries de-fine the register-to-register communication for remote I/O points. Each line represents a register/pointconnection to another Modbus slave device. Up to 32 table entries are possible.Poll Timeout: The poll timeout refers to the time limit, in milliseconds, to communicate with a specificslave device. When this time limited is exceeded, the system begins communicating with the nextdevice in the table. The Poll Timeout setting prevents the system from stopping when a slave deviceis not responding.Remote Register: The Remote Register entry is the to register in the I/O mapping. I/O points arelinked from the local register to the remote register.Remote Type: Select a type from the following drop-down list: none, coil (output), discrete input,input register, or holding register. DX80 device registers are all holding registers.ThresholdOn pointTimeInput ValueInputHysteresis pointOff point