Delta AH500 Manual page 706

AH500 Module Manual
14.9.5 IO Mapping Relationships between Master PLC and
Remote I/O modules
The following interface shows the starting addresses and lengths of the OUTPUT area and INPUT
area that PLC CPU assigns to the master module. The data in OUTPUT area are sent to the slave
and the INPUT area receives the data from the slave
The mapping addresses the master assigns to the configured modules of the slave are shown on
the following interface. It can be seen that the configured modules of the slave corrspond to the
starting number of D registers in OUTPUT and INPUT area of the master PLC through the interfaces
above and below.
Address: it is the offset of the starting addresses in INPUT and OUT areas that the AH master PLC
assigns to the master module with the Unit: byte.
The counting of the starting D register in the master PLC corresponding to the configured module of
the slave:
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).
14-76