Local Expansion I/O - Automationdirect.com DirectLOGIC DL205 Series User Manual

Local Expansion I/O

Use local expansion when you need more I/O points, a greater power budget than the local
CPU base provides or when placing an I/O base at a location away from the CPU base, but
within the expansion cable limits. Each local expansion base requires the D2–CM controller
module in the CPU slot. The local CPU base requires the D2–EM expansion module, as well
as each expansion base. All bases in the system must be the new (–1) bases. These bases have a
connector on the right side of the base to which the D2–EM expansion module attaches. All
local and local expansion I/O points are updated on every CPU scan.
Use DirectSOFT PLC Configure I/O menu option to view the local expansion system
automatic I/O addressing configuration. This menu also allows manual addresses to be
assigned if necessary.
Total number of local / expansion bases per system
Maximum number of expansion bases
Total I/O (includes CPU base and expansion bases)
Maximum inputs
Maximum outputs
Maximum expansion system cable length
D2–CM Local Expansion Module
The D2–CM module is placed in the
CPU slot of each expansion base. The
rotary switch is used to select the
expansion base number. The expansion
base I/O addressing (Xs and Ys) is based
on the numerical order of the rotary
switch selection and is recognized by the
CPU on power–up. Duplicate
expansion base numbers will not be
recognized by the CPU.
The status indicator LEDs on the
D2–CM front panels have specific
functions which can help in
programming and troubleshooting.
D2–CM Indicators
PWR (Green)
RUN (Green)
DIAG (Red)
Chapter 4: System Design and Configuration
DL230
These CPUs do not support local
expansion systems
Status
ON Power good
OFF Power failure
ON D2–CM has established communication with PLC
OFF D2–CM has not established communication with PLC
ON Hardware watch–dog failure
ON/OFF I/O module failure (ON 500ms / OFF 500ms)
OFF No D2–CM error
DL205 User Manual, 4th Edition, Rev. B
DL240 DL250 DL250-1
Expansion
Controller
Meaning
1
2
3
4
5
DL260
6
3 5
2 4
7
768 1280
512 1024
8
512 1024
30m (98ft.)
9
10
11
12
13
14
A
B
C
D
4–11