Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 367

Troubleshooting
Serial Indicator
communi- display
cations
mode
Serial com- The SD@/
munica- RD@ and
tions mode COM@ indi-
is set to cators do
protocol not flash at
macro. all. (Com-
munica-
tions have
not been
electrically
estab-
lished.)
338
Status Words allocated in
information, the CIO Area
etc.
The PMCR(260) Bits 00 to 03 (Error
instruction is Code) of the words
executed, but bit allocated in the CIO
15 (Protocol Area n+9/n+19 are
Macro Execut- set to 4 Hex (Proto-
ing Flag) of the col Data Syntax
words allocated Error).
in the CIO Area
The Network Com-
n+9/n+19 does
munications Instruc-
not turn ON.
tion Execution
Enabled Flag
(A20200 to A20207)
is set to OFF (Execu-
tion Disabled).
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.
Bit 00 (Port Active) of
the words allocated
in the CIO Area n+6/
n+16 remains 0 (Port
Inactive).
Bit 15 (Protocol Send processing is
Macro Execut- not executed.
ing Flag) of the
words allocated
in the CIO Area
Bit 10 (Remote Node
n+9/n+19 is
Receive Busy) of the
turned ON when
words allocated in
the PMCR(260)
the CIO Area n+7/
instruction is
n+17 is set to ON
executed, but
(Remote Node
data cannot be
Busy).
sent or received
properly.
Bit 09 (Sequence
Wait) of the words
allocated in the CIO
Area n+9/n+19 is set
to ON (Sequence
Wait Status).
Cause
The protocol data in the
Board or Unit is incorrect.
The SEND(090),
RECV(098), CMND(490),
or another PMCR(260)
instruction is currently
being executed using the
same communications
port number.
The program is incorrect. As PMCR(260) instruc-
Protocol data is being
transferred, or a SUM
value error has occurred.
The send wait time speci-
fied in communications
sequence step units is
too long.
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."
The WAIT command can-
not be released.
Section 11-3
Remedy
Use CX-Protocol to cor-
rect and transfer the pro-
tocol data.
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.
tion execution conditions,
set the Network Commu-
nications Instruction Exe-
cution Enabled Flag
(A20200 to A20207) to a
NO execution condition.
Wait for the transfer of
protocol data to finish or
use CX-Protocol to trans-
fer the protocol data.
Use CX-Protocol to check
whether the send wait
time is correctly set.
Release the remote node
busy status to enable the
local node CS signal to
turn ON.
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.