1771-6.5.132, PLC-5 DeviceNet Scanner User Manual

D-2 Data Map ExampleExample FrameworkBased on the backplane addressing mode and the scanner’s blocktransfer support, the following number of discrete inputs aresupported.Addressing Mode Discrete Inputs2-slot 01-slot 81/2-slot 24This example adheres to the following structure:• only one master scanner can own a device; there may, however,be multiple masters on a network• interface nodes (KFDs, PCDs, etc.) should be assigned nodenumbers 62, 61, 60, etc.• node number 63 should always be left available to add a newdefault device• address 0 is normally used for the scanner. Scanners inmulti-scanner networks are numbered 0, 1, 2, etc.• the first word in the device input data table contains the modulecommand word (this is applicable under any mapping scheme)• input data and status bits received from nodes 1-62 on channelA are mapped to both the discrete inputs and the device inputdata table• no discrete inputs are used for channel B• the device input data table is segmented–one word for the module status word–four words each for channel A and B devices’ input data bits–four words each for channel A and B devices’ status data bitsPublication 1771-6.5.132 - June 2000