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9-41
9 Troubleshooting and Maintenance
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
9-5 Even
t L
ogs
9
9-5-3 Error De
scr
iptio
ns
Event name
Protocol Macro Error
Event code
54AA 0000 hex
Meaning
An error occurred in the protocol macro.
Source
PLC Function Module
Source details
CJ-series Unit
Detection
timing
At protocol macro
execution
Error attributes
Level
Observation
Recovery
---
Log category
System
Effects
User program
Continues.
Operation
Not affected.
System-defined
variables
Variable
Data type
Name
None
---
---
Cause and
correction
Assumed cause
Correction
Prevention
Sequence No. Error: An unregistered
number was specified for SeqNo
(communications sequence number)
of the ExecPMCR instruction (no indi-
cators light).
Correct the communications
sequence number. Register a
sequence with the specified number
from the CX-Protocol.
Specify a registered sequence num-
ber.
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.)
•
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.
Do not exceed the specified area
range when you write data to or read
from the CPU Unit.
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.
Check to see if any of the conditions
that are given as causes exits and
correct any problems.
Check to see if any of the conditions
that are given as causes apply.
Attached
information
Attached information 1: Port number where error was detected
Precautions/
Remarks
None
Содержание CJ1W-SCU22
Страница 192: ...4 Using Protocol Macros 4 56 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 250: ...6 No protocol Mode 6 22 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 460: ...A Standard System Protocol R 126 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494...
Страница 473: ...Index 1 CJ series Serial Communications Units Operation Manual for NJ series CPU Unit W494 I Index...