Omron CJ1W-SCU32 Operation Manual page 299

Remedy for Each Protocol Macro Error Code
The following table shows the measures to correct the errors indicated in bits 00 to 03 (Error code) of
*_P1(or P2)_PmrSta.
Error Indicator
code
0 Hex No display
1 Hex No display
2 Hex No display
3 Hex ERC:
Flashing
ERR/ALM:
Flashing
4 Hex ERC:
Flashing
ERR/ ALM:
Flashing
Note For details on the protocol macros, refer to the CX-Protocol Ver.1.9 OPERATION MANUAL (Cat.
No. W344).
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
Error details
Normal ---
Reserved ---
Sequence num- The communications sequence
ber error number specified in the Exec
PMCR instruction's SeqNo oper-
and which is not registered.
Data read/write The data range of the specified
range error area is exceeded when data is
written to or read from the
CPU Unit.
Protocol data syn- There is a code that cannot be
tax error executed during protocol execu-
tion.
9 Troubleshooting and Maintenance
Cause
---
---
Correct the communications sequence num-
ber.
Use CX-Protocol to register the specified
communications sequence number.
For operand specification:
Check the in-out variable settings for the
ExecPMCR instruction.
For direct specification of link words:
Use CX-Protocol to check the specified
range.
Check the following items and correct the
problem.
• Check whether the total specified number
of link words in the area (O1, O2, I1, I2)
exceeds 500 words.
• The same area with link word specification
is used by both ports 1 and 2.
• A write instruction with constant specifica-
tion is specified.
• An interrupt notification is specified at the
Unit.
• There are more than 30 write attributes set
for one message.
• The length of a send/receive message is
set to 0 bytes.
• The length of a send/receive message is
longer than the maximum send/receive
message bytes setting.
• No messages are registered for matrix
reception.
• Both RTS/CTS flow control and Xon/Xoff
flow control are set for the same transmis-
sion line.
Remedy
9-21
9