Automationdirect.com DirectLOGIC DL205 Series User Manual page 173

DL260 Local Expansion System
The D2–260 supports local expansion up to five total bases ( one CPU base + four local
expansion bases) and up to a maximum of 1280 total I/O points. An example local expansion
system is shown below. All local and expansion I/O points are updated on every CPU scan.
No specialty modules can be located in the expansion bases (refer to the Module Placement
Table earlier in this chapter for restrictions).
D2–CM Expansion
Base Number Selection
D2–260
CPU
• The CPU base can be located at any base position in the expansion system.
• All discrete and analog modules are supported in the expansion bases. Specialty modules are
not supported in the expansion bases.
• The D2–CMs do not have to be in successive numerical order, however, the numerical
rotary selection determines the X and Y addressing order. The CPU will recognize the local
and expansion I/O on power–up. Do not duplicate numerical selections.
• The TERM (termination) switch on the two endmost D2–EMs must be in the ON
position. The other D2–EMs in between should be in the OFF position.
• Use the D2–EXCBL–1 or equivalent cable to connect the D2–EMs together. Either of the
RJ45 ports (labelled A and B) on the D2–EM can be used to connect one base to another.
I/O addressing #5
I/O addressing #4
I/O addressing #1
I/O addressing #2
I/O addressing #3
Chapter 4: System Design and Configuration
D2–EM Termination
Switch Settings
30m (98ft.) max. cable length
DL205 User Manual, 4th Edition, Rev. B
NOTE: Do not use Ethernet
hubs to connect the local
expansion system together
NOTE: Use D2-EXCBL-1 (1m)
(Category 5 straight-through
cable) to connect the D2-EMs
together
4–13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D