dominic.irl Posted May 20, 2015 Report Share Posted May 20, 2015 Hi all, I am looking for the input/output modbus address range of the expansion module "io ai 4 ao 2" for the V430. How do I go about finding these digits? Thanks in advance. D Quote Link to comment Share on other sites More sharing options...
s.pratt Posted May 20, 2015 Report Share Posted May 20, 2015 Hello D, Are you trying to retrieve the values via the expansion adapter or via the PLC? The I/O points are written to an operand of your choice, so it will be the operand you are reading/writing, and not the I/O module directly. You choose the operand when you link the I/O point through the HW Configuration. If you trying to read/write to the addresses through the expansion adapter, this can only be done with an EX-RC1. The slave address table can be found in the help files: Communications> Communication FBs> MODBUS> Slave Addressing. The V430 uses the Enhanced Series table, and the EX-RC1 uses the Standard Series table. You will see these links in green lettering on the Slave Addressing file page. Hope this helps. Quote Link to comment Share on other sites More sharing options...
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