Omron SYSMAC CJ1W-SCU21-V1, Operation Manual

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Troubleshooting Section 11-3
Serial com-
munica-
tions mode
is set to
protocol
macro. The SD @ /
RD @ and
COM @ indi-
cators do
not flash at
all. (Com-
munica-
tions have
not been
electrically
estab-
lished.)
The PMCR(260)
instruction is
executed, but bit
15 (Protocol
Macro Execut-
ing Flag) of the
words allocated
in the CIO Area
n+9/n+19 does
not turn ON. Bits 00 to 03 (Error
Code) of the words
allocated in the CIO
Area n+9/n+19 are
set to 4 Hex (Proto-
col Data Syntax
Error). The protocol data in the
Board or Unit is incorrect. Use CX-Protocol to cor-
rect and transfer the pro-
tocol data.
The Network Com-
munications Instruc-
tion Execution
Enabled Flag
(A20200 to A20207)
is set to OFF (Execu-
tion Disabled). The SEND(090),
RECV(098), CMND(490),
or another PMCR(260)
instruction is currently
being executed using the
same communications
port number. Execute the PMCR(260)
instruction using a com-
munications port number
(set in bits 12 to 15 of C1)
other than that used for
the SEND(090),
RECV(098), CMND(490),
or another PMCR(260)
instruction.
As PMCR(260)
instruction execution
conditions, the Net-
work Communica-
tions Instruction
Execution Enabled
Flag (A20200 to
A20207) is set as a
NC execution condi-
tion. The program is incorrect. As PMCR(260) instruc-
tion execution conditions,
set the Network Commu-
nications Instruction Exe-
cution Enabled Flag
(A20200 to A20207) to a
NO execution condition.
Bit 00 (Port Active) of
the words allocated
in the CIO Area n+6/
n+16 remains 0 (Port
Inactive). Protocol data is being
transferred, or a SUM
value error has occurred. Wait for the transfer of
protocol data to finish or
use CX-Protocol to trans-
fer the protocol data.
Bit 15 (Protocol
Macro Execut-
ing Flag) of the
words allocated
in the CIO Area
n+9/n+19 is
turned ON when
the PMCR(260)
instruction is
executed, but
data cannot be
sent or received
properly. Send processing is
not executed. The send wait time speci-
fied in communications
sequence step units is
too long. Use CX-Protocol to check
whether the send wait
time is correctly set.
Bit 10 (Remote Node
Receive Busy) of the
words allocated in
the CIO Area n+7/
n+17 is set to ON
(Remote Node
Busy). The CS signal from the
remote node cannot turn
ON (the remote node
remains in busy status)
because the transmission
control parameter
“ RS/
CS Flow Control ” is set to
“ Yes. ”
Release the remote node
busy status to enable the
local node CS signal to
turn ON.
Bit 09 (Sequence
Wait) of the words
allocated in the CIO
Area n+9/n+19 is set
to ON (Sequence
Wait Status). The WAIT command can-
not be released. Review the program so
that bits 00 and 08 (Wait
Release Switch) of word
n in the words allocated
in the CIO Area can be
switched from OFF to
ON.
Serial
communi-
cations
mode
Indicator
display
Status
information,
etc.
Words allocated in
the CIO Area
Cause Remedy