Eaton i-on series Engineering Manual

Also see for i-on Series: Administration and User Manual Administration and User Manual Engineering guide

Contents

The System Bus i-on RangePage 26Other Radio Device AddressingFor radio keypads, radio sirens and WAMs, during the learning process the installerselects a specific radio expander to learn the identity of the radio device. This means thatwhen programming these devices the control unit refers to them by a number containingthree groups of characters (similar to the characters the system uses to refer to zones andoutputs):Rn-dd-zzRn-dd The first two groups are the address of the bus device (see page 23). The “R”indicate that the device is a radio expander.zz = The last group is the radio device number.Radio Device NumberingWhen reporting alarms to an ARC using CID or SIA protocols the control unit reports eachdevice as a number (not as an address). Each type of device has its own numberingrange:Radio Siren Ext.01 to Ext.20WAMs WAM01 to WAM20Note that the highest number will depend on the control unit.Other Devices Connected to the Control UnitOther devices connected directly to the control unit use a simpler addressing scheme:Sirens/Strobe “Siren” and “Strobe”Loudspeakers 01 and 02 (01 only for i-on30EX and i-on50EX)Plug-by Outputs 01 to 16 (1 to 12 for i-on30EX and i-on40).Bus Scanning and Re-configuringThe control unit keeps an internal list of every bus device that it has learned. In order tokeep the list up to date the control unit carries out two functions: bus scan and bus re-configure.During a bus scan the control unit asks every device on the bus to report its bus address.The control unit compares the addresses reported with the addresses that it has stored inits list. If a device has a default bus address the control unit ignores it.Bus scanning takes place during power up and when the installer leaves the InstallerMenu.If the devices reporting to the control unit do not match the stored list of devices, then thecontrol unit offers to re-configure the bus. If there are additional devices on the bus thenthe control unit will add those to the list of devices that it knows about. If there are feweritems on the bus than on the list, then the control unit will remove those missing devicesfrom its list.The control unit re-configures the bus while it is still in the Installer Menu. When the controlunit leaves Installer Menu it stores the changed bus device list in non-volatile memory(nvm).This has the following implications: Carrying out a bus scan does not change the bus configuration. Note that on largesystems a bus scan may take some minutes.