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I have 2 PLC controllers and in one controller I have Mapped variables to address 400001, 400002, 400004 and 400005 respectively and 400003 is not mapped.
From Master if I try reading multiple registers (all 4) starting from 400001, for the un-mapped address (i.e. 400003 in above case) is the slave supposed to return illegal data address or zero (0) for the un-mapped address? Please help in understanding this exception case.
From Master if I try reading multiple registers (all 4) starting from 400001, for the un-mapped address (i.e. 400003 in above case) is the slave supposed to return illegal data address or zero (0) for the un-mapped address? Please help in understanding this exception case.