Manual

37
DeviceNet Gateway
(1) Fixed assignment
When a CJ-series master unit is used, one of three pairs of fixed assignment areas can be specified
as assigned relay areas (using a specified soft switch).
In other words, three master units can be installed in a single PLC, with each master unit assigned
different areas.
[1] When areas are selected for fixed assignment, I/O addresses in the applicable output and input
areas will be assigned sequentially in the order of node addresses according to a fixed order.
[2] A slave having more than 16 I/O points occupies multiple channels.
[3] A slave having no more than 16 I/O points occupies the lower byte.
[4] The master unit will not occupy any channels even when the node address is set. (This applies
to both fixed assignment and free assignment.)
One of these
area pairs is
selected.
I/O memory address of
CPU unit
Output
(OUT)
area 1
Input
(IN)
area 1
Node address
To each slave
Address 0
Address 1
Address 62
Address 63
From each slave
Output
(OUT)
area 2
Input
(IN)
area 2
Output
(OUT)
area 3
Input
(IN)
area 3
Address 0
Address 1
Address 62
Address 63
Address 0
Address 1
Address 62
Address 63
Address 0
Address 1
Address 62
Address 63
Address 0
Address 1
Address 62
Address 63
Address 0
Address 1
Address 62
Address 63
To each slave
From each slave
To each slave
From each slave