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Troubleshooting Section 11-3
Note The following table shows the measures to correct the errors indicated by net-
work communications end codes (A203 to A210).
Network communi-
cations end code
Error details Remedy
Bits
08 to 15
Bits
00 to 07
02 Hex 02 Hex There is no Board
or Unit correspond-
ing to the unit
address.
Check whether a different Board/Unit or serial port (physi-
cal port) is specified in the PMCR(260) instruction C1 oper-
and (communications port number).
04 Hex 01 Hex The specified ser-
vice is not sup-
ported.
Check whether a different Board/Unit or serial port (physi-
cal port) is specified in the PMCR(260) instruction C1 oper-
and (communications port number).
Check whether the serial communications mode of the
serial port specified in the C1 operand is protocol macro. If
not, set the serial communications mode to protocol macro.
02 Hex 05 Hex The watchdog timer
expires because no
response is
received from the
remote node within
the specified time.
Check whether the serial communications mode of the
serial port specified in the C1 operand is protocol macro. If
not, set the serial communications mode to protocol macro.
11 Hex 06 Hex The specified com-
munications
sequence number
does not exist.
The communications sequence number specified in the
PMCR(260) instruction C2 operand is unregistered.
Use CX-Protocol to register the communications sequence
number.
22 Hex 01 Hex PMCR(260) instruc-
tion cannot be exe-
cuted because
protocol macro is
currently being exe-
cuted.
An attempt is made to execute the PMCR(260) instruction
while protocol macros are being executed.
Modify the ladder program so that bit 15 (Protocol Macro
Executing Flag) of the words allocated in the CIO Area n+9/
n+19 is set to a NC execution condition for the PMCR(260)
instruction.
24 Hex 01 Hex No registration table
exists.
The problem cause is one of the following:
• Protocol macro (communications sequence) data has not
been registered.
• Protocol macro (communications sequence) data is cur-
rently being registered or transferred.
• Protocol macro (communications sequence) data con-
tains a SUM value error.
Use CX-Protocol to transfer the correct protocol macro
(communications sequence) data.
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