Omron CJ1W-SCU22, Руководство по эксплуатации, Страница: 288 / 478

9 Troubleshooting and Maintenance
9-10
CJ-series Serial Communications Units Operation Manual for NJ-series CPU Unit(W494)
z
Reception Failure (SerialRcv or SerialRcvNoClear)
9-3-2 No-protocol Mode
Error conditions Confirmation of device
variable for CJ-series Unit, etc.
Cause Remedy
Serial
communications
mode
Indicator
display
Status and
other
conditions
The serial commu-
nications mode is
set to a mode other
than No-protocol
Mode --- --- Bits 12 to 15 (Serial communica-
tions mode) of
*P1(orP2)_SysSetSta are set to a
value other than 3 hex. The serial communi-
cations mode is not
set correctly. ---
The Serial
communica-
tions mode is
set to any of
the following
modes: Proto-
col Macro
Mode, Serial
Gateway
Mode, Mod-
bus-RTU
Slave Mode,
Loopback Test
Mode. --- --- When the Seri-
alRcv or Seri-
alRcvNoClear
instruction is
executed Command end
code such as
0401 hex (unde-
fined command)
is returned. The serial communi-
cations mode is not
set correctly. Set bits 08 to 11
(Serial communica-
tions mode) of
*_P1(orP2)_PortCfg
to 3 hex (No-proto-
col Mode).