BES MDU12i, Modular Unit

Page: 9 / 41

DOC32 Page 9 of 41 Issue 2 30 NOV 17
3.0 Operation
The iMDU product is energised when supplied with AC power. On power application, and if
configured to do so, the system will sequentially switch each socket outlet ON starting at
socket 1 and ending at socket 12 at a pre-defined sequence period (default 0.5 seconds)
illuminating the optical power indicator associated with each socket. Should a fuse be
ruptured (blown) on any outlet the corresponding optical fuse blown indicator shall also
illuminate.
The system will continually collect data from the meter and store this for access via the Web
server, SNMP registers, Telnet command interface or Modbus requests.
MODBUS connection.
The iMDU product may be configured as a ‘Master’ and connected to up to thirty-one other
iMDU’s, via a 2 wire RS485 interface, that are configured as ‘Slaves’ to allow the master
iMDU to collect measurements from the slaves.
Ethernet connection
The iMDU product may be connected to a PC or laptop using a cross-over CAT5 Ethernet
cable or to a router using a straight through CAT5 Ethernet cable. The GREEN LED on the
Ethernet connection port indicates that the product is connected to a valid device, the
YELLOW LED indicates data traffic to/from the unit.The product, as default, is configured for
DHCP [Dynamic Host Configuration Protocol] which allows a connected Ethernet router to
assign an IP address to the product for Ethernet communication. DHCP may be configured
using the ‘Network Configuration’ button within the Web server, see Appendix A ‘Web server
HTML page description’ for more information.
Web server access
The iMDU product supports full HTTP access of the internal HTML web pages using any
standard internet browser ie. Internet Explorer, Firefox, Google Chrome etc. Please see
Appendix A ‘Web server HTML page description’ for more information on
accessing this service.
SNMP register access
The iMDU product can be provided with a MIB [Management Information Base] for use with
any SNMP manager. This MIB outlines all the accessible registers, there type and
description. The file is called ‘iMDU_Vxxx.mib’. For more information please look at the MIB
file. Please see Appendix
B ‘SNMP trap setup and register description’ for more information.
Telnet command line access
The iMDU product supports a selectable Telnet command line interface that allows
anexternal user to access system information and control socket status. See Appendix C
‘Telnet command line interface description’ for more information.