CJ1W-EIP21 Omron, CJ1W-EIP21 Datasheet - Page 352

• Manufacturer Part Number: CJ1W-EIP21
• Description: Ethernet I/P Module
• Manufacturer: Omron

Specifications of CJ1W-EIP21

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Automatic Clock Adjustment
12-1 Automatic Clock Adjustment
12-1-1 Overview
324
Note
The EtherNet/IP Unit or built-in EtherNet/IP port can obtain the clock informa-
tion from the SNTP server (see note 1) at a particular time or when a desig-
nated bit turns ON and then refresh the internal clock information of the CPU
Unit to which it is mounted (referred to as the local CPU Unit).
Clock data is obtained from the
SNTP server and written at a particular
time or when a designated bit turns ON.
CPU Units manufactured on or
before January 31, 2003 (lot num-
bers 030131 or earlier):
CJ1G-CPU
CJ1H-CPU
CS1G-CPU
CS1H-CPU
(1) The SNTP (Simple Network Time Protocol) server is used to control the
(2) An error will occur in the following CPU Units when the automatic clock
(3) The manufacturing date can be determined from the lot number on the
(4) The lot numbers are as follows:
(5) In accordance with SNTP protocol specifications, automatic adjustment
Intranet
time on the LAN.
adjustment function is executed under the conditions shown in the table.
side or top corner of the CPU Unit.
YYMMDDnnnn, in which YY indicates the last two digits of the year, MM
the month, DD the day, and nnnn the serial number.
will not be possible from February 7, 2036. In EtherNet/IP Units or built-
in EtherNet/IP ports, this function will no longer operate from February 7,
2036 (an error message will not be displayed).
SNTP server
@@
@@
@@
@@
24: 00: 00
CPU Unit
H
H
H
H
Ethernet
Automatic clock adjustment
EtherNet/IP Unit or
built-in EtherNet/IP port
When the CPU execution mode is set to other
than normal mode (priority peripheral servicing
mode, parallel processing with synchronous
memory access mode, or parallel processing
with asynchronous memory access mode).
AND
When the CPU Unit operating mode is set to
RUN or MONITOR mode.
24: 00: 00
The clock information can be broadcast to other CPU Units on the same Network.
Conditions
Section 12-1