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1.3 Outline of communication
For communication between the D75P2 and master module, the two different
transmission formats, cyclic transmission and transient transmission, are used.
When AJ61BT11 or A1SJ61BT11 is used
PLC CPU
Master module
Cyclic transmission
Transient
transmission
Buffer memory
Remote
input/output
Remote registers
D75P2
Read/write with
FROM/TO
command
Automatic refresh
with dedicated
command
Fig. 1.5 Outline of communication (When AJ61BT11 or A1SJ61BT11 is used)
When a module other than the AJ61QBT11 or A1SJ61QBT11 is used
PLC CPU
Master module
Cyclic transmission
Transient
transmission
Buffer memory
Remote
input/output
Remote registers
D75P2
Automatic refresh
Fig. 1.6 Outline of communication (When a module other than the AJ61QBT11 or A1SJ61QBT11
is used)