Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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Auxiliary Area and CIO Area Allocations Section 5-3
Status Area Descriptions
Name Address Meaning Timing
Initialize ON OFF
Error log
data error Board:
CIO 190101
Unit:
n + 1 bit 01
If a write to EEPROM fails for the error log, it
is assumed the EEPROM is beyond its use-
ful life and this flag is turned ON. With a
Serial Communications Unit, the ERC indica-
tor will also light. Although this has no effect
on communications and other functions,
replace the Board or Unit promptly for ease
of maintenance. Startup
(see note) At error Startup
Protocol
data error Board:
CIO 190100
Unit:
n + 1 bit 00
Board only:
A42409
This flag is turned ON if an error is detected
in the protocol data SUM check when the
power is turned ON. With a Serial Communi-
cations Board, the ERR/ALM indicator on the
CPU Unit will also flash and the RDY indica-
tor will flash at 1-second intervals. A42409
(Board only) of the Auxiliary Area will also
turn ON.
With a Serial Communications Unit, the RDY
and ERC indicator will flash.
This error may occur if the communications
connector becomes disconnected or the
PLC power is turned OFF during protocol
data transfer. Use the CX-Protocol to trans-
fer of the protocol data again.
Startup
(see note) At error When pro-
tocol data
has been
success-
fully trans-
ferred
Setup error Board:
CIO 190601 (port 1)
CIO 191601 (port 2)
Unit:
n + 6 bit 01 (port 1)
n + 16 bit 01 (port 2)
Board only:
A42408 (not avail-
able for Unit)
This flag is turned ON if a Setup error occurs
in the allocated DM Area, After changing the
Setup, turn ON the power again, restart the
Board/Unit, restart the port, or execute the
STUP(237) instruction. Startup
(see note) At error Startup
(see note)
Port operat-
ing Board:
CIO 190600 (port 1)
CIO 191600 (port 2)
Unit:
n + 6 bit 00 (port 1)
n + 16 bit 00 (port 2)
ON when the port can operate correctly.
OFF when protocol macro data is being
transferred.
Startup
(see note) At error After pro-
tocol data
has been
transferred
Remote Unit
receive
busy/receive
wait Board:
CIO 190710 (port 1)
CIO 191710 (port 2)
Unit:
n + 7 bit 10 (port 1)
n + 17 bit 10 (port 2)
This flag indicates the receive status of a
remote Unit during SEND when Xon/Xoff
flow control or RS/CS flow control is set in
the transmission control parameters. When
Xon/Xoff flow control is set, the reception
buffer is cleared when the sequence starts,
so the status area is set to remote Unit
receive wait (0).
1: Remote Unit receive busy
(Reception is disabled because the
reception buffer is full.)
0: Remote Unit receive wait (Reception is
enabled.)
Startup
(see note) When sta-
tus is read After busy
status has
been
released