16
Query Period
updated from the NTP server.
Note:
-
Daylight Saving Time
: In certain regions (e.g. US), local time is adjusted during the summer
season in order to provide an extra hour of daylight in the afternoon, and the time shifted forward (or
backward) is usually an hour.
-
SNTP
:
Simple N
etwork
T
ime
P
rotocol. It is used to synchronize the computer systems’ clocks with a
standard NTP server. Two of the NTP server examples would be
time.nist.gov
and
time-A.timefreq
.bldrdoc.gov.
2.3.8
Modbus Setting
Modbus TCP/IP is an industrial protocol that can be used to read and write the switch’s status and
settings via Modbus, which is similar to MIB browser. The slave address below can to be configured
to match the settings inside the Modbus Master. A Modbus memory mapping table is provided in
Appendix B: Modbus Memory Map.
Figure 2.21 Modbus address page
Figure 2.21 shows where users can set up the Modbus ID address; in addition, users can use
Modbus TCP/IP compatible applications such as
Modbus Poll
to configure the switch. A tutorial of
Modbus read and write is illustrated below:
Note:
The switch only supports Modbus function code 03, 04 (for Read) and 06 (for Write).
Read Registers (This sample is to the switch’s IP Address)
Figure 2.22 Modbus address mapping table
Summary of Contents for EH7506
Page 35: ...29 Figure 2 40 Mapping Table of DSCP ECN page...
Page 53: ...47 2 9 1 GVRP Settings Figure 2 62 GVRP setting page...
Page 55: ...49 2 9 2 GMRP Settings Figure 2 63 GMRP setting page...
Page 76: ...70...
Page 90: ...84 Figure 2 97 iA Ring Example Topology...
Page 98: ...92 Management Address Indicates neighbor s management IP address...
Page 110: ...104 Figure 2 115 Reboot page...
Page 117: ...111...
