Devicenet Remote I/O Communications; Overview Of Remote I/O Allocations For Smart Slaves - Omron DRT2 SERIES DEVICENET SLAVES - OPERATION MANUAL 04-2008 Operation Manual

DeviceNet Remote I/O Communications

3-2 DeviceNet Remote I/O Communications
3-2-1

Overview of Remote I/O Allocations for Smart Slaves

Smart Slave I/O
Allocation Methods
34
This section describes how DRT2-slave data can be allocated for remote I/O
communications with the Master Unit.
Unlike the DRT1-series Slaves, the DRT2-series Smart Slaves store data
internally. When necessary, the user can specify which data is allocated for
remote I/O communications with the Master Unit. (Allocation is not required,
however, for the default I/O data.)
Specify which
data is allocated
where.
• Data can be specified in either of the two ways described below.
• Select a data pattern (fixed combi-
nation) using the Slave's default
connection path setting.
Master
A
B
Smart Slave
A
Specified
B
data pattern
allocated.
A
C
B
C
Either fixed allocation or user allocation is
possible.
Smart Slave data can be allocated to the Master Unit for remote I/O communi-
cations in any of the ways described below.
Master
Smart Slave
A
Data is
B stored
internally.
C
• Select individual data as desired
using the Master's connection set-
ting.
Master
Specified data
allocated.
Select from
predetermined
data patterns.
Only possible with user allocation and if
the Master Unit is a CS/CJ-series
DeviceNet Unit.
Section 3-2
A
C
Smart Slave
A
Select the
required
B
data.
C