Omron SYSMAC CS1W-LCB01 Operation Manual page 266

Errors and Alarm Troubleshooting
Code Description
21 I/O memory
address out-of-
range
29 Reception error for
external device
30 Response timeout A response was not returned
31 Controller unit
number duplicated
232
Explanation
An address out of the I/O
memory address range has
been specified on the CPU
Unit Terminal, Expanded
CPU Unit Terminal, Node
Terminals and Field Terminal
blocks.
A communications frame
error was generated by the
data received from an
ES100X Controller for an
ES100X Controller Terminal
(Block Model 045). (An FCS
check error or frame error
occurred 3 times in a row.
after sending data to the
Controller for a ES100X Con-
troller Terminal (Block Model
045). (Response was not
returned for 5 s 3 times.)
The unit number set in ITEM
006 for a ES100X Controller
Terminal (Block Model 045) is
the same as another ES100X
Controller Terminal. (A
response timeout will occur if
the unit number does not
exist.)
Operation at error
Operation of the function
block in question is stopped.
Communications will be
stopped with the specified
ES100X and tried with
another ES100X.
Communications will be
stopped with the specified
ES100X and tried with
another ES100X.
Communications will be
stopped with the ES100X
Controllers.
Section 7-1
Remedy
On the CPU Unit Terminal
and Expanded CPU Unit Ter-
minal blocks, check the lead-
ing address, and on field
terminals check the setting of
the CIO (channel I/O) Area
number setting.
In the case of Node Termi-
nals, check the setting of the
"leading address of the mem-
ory for the node terminals"
specified by System Com-
mon block ITEM 043.
Check the communications
path and the communications
settings (7 data bits, even
parity, and 2 stop bits).
Check the communications
path, the communications
settings (7 data bits, even
parity, and 2 stop bits), and
other required settings in the
ES100X (parameter setting
mode, unit number, etc.).
Change the unit number set-
tings (ITEM 006)so that each
is used only once.