Troubleshooting Procedures

Section 8-4

Clock Not being Automatically Adjusted

 

 

S T A R T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The automatic clock adjustment function cannot be used

 

Is the HOST indicator

Y

because no IP address or host name is set for the SNTP

 

 

 

server.

 

lit?

 

 

 

 

 

Using the CX-Programmer, make the SNTP settings in the

 

 

 

 

 

 

N

 

 

 

System Setup. If the host name is used for the server settings,

 

 

 

 

then the DNS tab settings must be made too.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Is the HOST indicator Y

Is the SNTP error

Y

flashing?

 

status bit ON?

 

N

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

There is a mistake in the Unit Setup. Correct the mistake.

Is the ERH indicator

Y

The SNTP server address is wrong (set to 255.255.255.255

 

or 127.*.*.*).

flashing?

 

 

The SNTP server host name is wrong.

 

 

 

 

 

 

 

 

 

 

N

Referring to the error log, correct the communications path.

 

 

 

 

 

The SNTP server address is wrong.

 

 

 

 

 

 

The IP router table is wrong.

 

 

 

 

 

 

There is a communications error or a mistake in the

 

 

 

 

 

 

communications path settings.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clock information cannot be changed because a bus error

 

 

 

 

 

 

occurred between the PLC and the Ethernet Unit.

 

 

 

 

 

 

Turn OFF the power and restart the PLC.

Is 03C6 stored in

Y

Is the SNTP error

Y

If the problem occurs again, replace the PLC, Backplane, or

Ethernet Unit.

the Ethernet Unit's

 

status bit ON?

 

 

error log?

 

N

 

 

N

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For some CPU Unit models and lots, there are operation

 

 

 

 

 

 

modes in which clock information cannot be changed.

 

 

 

 

 

 

For the following model and lot numbers, clock information

 

 

 

 

 

 

cannot be changed while using RUN Mode or Monitor Mode

 

 

 

 

 

 

in asynchronous mode.

 

 

 

 

 

 

CS1G/H-CPU@@H (Lot Nos.: 030430 and earlier)

 

 

 

 

 

 

CJ1H/G-CPU@@H (All lots)

E N D

 

 

 

 

 

 

 

 

222

Page 247
Image 247
Omron CS1W-ETN21 operation manual Clock Not being Automatically Adjusted, Flashing? Status bit ON?