Omron CJ1W-SCU32 Operation Manual page 319

Event name Protocol Macro Error
Meaning An error occurred in the protocol macro.
Source PLC Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
None
Cause and Assumed cause
correction
Sequence No. Error: An unregistered
number was specified for SeqNo
(communications sequence number)
of the ExecPMCR instruction (no indi-
cators light).
Data read/write area exceeded error:
The specified area range was
exceeded when data was written to or
read from the CPU Unit. (The ERC
indicator and ERR/ALM indicator will
flash.)
Protocol data syntax error: There was
a code that cannot be executed dur-
ing protocol execution. (The ERC indi-
cator and ERR/ALM indicator will
flash.)
• The total of the areas specified for
link words O1, O2, I1, and I2
exceeded 500 words.
• The same link word is used by both
ports 1 and 2.
• Writing was specified with a con-
stant.
• Interrupt notification was specified
for a Serial Communications Unit.
• Thirty one or more items were set
for the write attribute data for one
message.
• A length of 0 bytes was specified for
a message that was sent or
received.
• The length of a message to be sent
or received exceeds the maximum
send/receive bytes.
• A message is not registered for
matrix reception.
• The transmission control is set to
both RTS/CTS flow control and
Xon/Xoff flow control.
Attached Attached information 1: Port number where error was detected
information
Precautions/ None
Remarks
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
Source details
Observation Recovery
Continues. Operation
Data type
---
Correction
Correct the communications
sequence number. Register a
sequence with the specified number
from the CX-Protocol.
• For operand specification, review
the SrcDat[ ] and DstDat[ ] arrays
for the ExecPMCR instruction.
• If a link word or direct specification
is used, review the specification
range from the CX-Protocol.
Check to see if any of the conditions
that are given as causes exits and
correct any problems.
9 Troubleshooting and Maintenance
Event code 54AA0000 hex
CJ-series Unit Detection
timing
--- Log category
Not affected.
Name
---
Prevention
Specify a registered sequence num-
ber.
Do not exceed the specified area
range when you write data to or read
from the CPU Unit.
Check to see if any of the conditions
that are given as causes apply.
At protocol macro
execution
System
9
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