Chapter 11 DeviceNet Remote I/O Module AHRTU-DNET 11.4.3.2 Allocation of the Mapping Addresses for AHRTU-DNET-5A The input and output mapping starting addresses of AHRTU-DNET-5A are allocated automatically by the master when it is added to the master. And the AH10DNET-5A master will allocate the mapping address to AHRTU-DNET-5A according to the lengths of the input and output mapping addresses of AHRTU-DNET-5A. The lengths of the input and output mapping addresses are determined by the configuration parameters of the modules connected to AHRTU-DNET-5A.
The mapping starting addresses will be allocated to AHRTU-DNET-5A only when it is added to the master and meanwhile they are related with the sequence in which the slave is added to the master. When the two slaves DT01S and AHRTU-DNET-5A exist simultaneously, the lengths of input and output mapping addresses of AHRTU-DNET-5A are both 80 bytes; those of DT01S are both 4 bytes; the input and output mapping starting addresses of AH10DNET-5A are specified as D1000 and D2000 as below.
If DTO1S is added to the master prior to AHRTU-DNET-5A, the input and output mapping addresses of AHRTU-DNET-5A are D1007~D1046 and D2007~D2046 respectively and D1007 and D2007 are its input and output mapping starting addresses respectively. 11-51 Input area: Slave Master Output area: Master Slave AH500 series Purpose Data Length AH500 series Purpose Data Length CPU register CPU register number number D1005~D1494 DeviceNet input 490 words D2005~D2494 DeviceNet output area: the values in the registers will be sent to the slave as the control data 490 words data area: these registers are used for receiving the status data feedback from the slave.