Chapter 14 Remote I/O Communication Module AHRTU-PFBS
14-47
The following window contains the offset address of I/O modules that AHRTU-PFBS-5A configures.
That is the offsets of the starting addresses of INPUT area and OUTPUT area that AH master PLC
assigns to the master module with Byte as the unit.
The D device in PLC regards Word as the unit, the offset address regards Byte as the unit and
therefore the counting of the starting D register in the master PLC that the configured module of the
slave corresponds to:
The starting number of the D registers in OUTPUT area of the master PLC corresponding to the
slave configured module = the starting address in OUTPUT area + (Address/2).
The starting number of the D registers in INPUT area of the master PLC corresponding to the slave
configured module = the starting address in INPUT area + (Address/2).
The offset address of each module can also be assigned manually by not ticking “Auto addressing”
on the ablove interface but inputing the value of offset address in Address column.
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