Rockwell Automation 1404-M4_M5_M6_M8 Powermonitor 3000 User Manual, PRIOR to Firmware rev. 3.0 - Manual (Page 55)

Publication 1404-UM001D-EN-E - October 2004
Powermonitor 3000 Operations 3-29
Default Output Behavior on Communications Loss
Refer to Communications Loss Behavior on page 6-4.
Network Demand / Time Configuration
The Ethernet Series B Powermonitor 3000 supports demand period
synchronization via the Ethernet network. Demand period
synchronization makes use of UDP (User Datagram Protocol)
messaging, a simplified, low-level protocol that supports broadcasts. A
Powermonitor 3000 may be configured as a "Master" or a "Slave". A
Master may be configured to receive an end-of-interval (EOI) signal
either from a dry contact connected to its Status Input 2 or via a
Controller Command write to Table A.53 (see below). When a Master
receives an EOI input, it broadcasts an EOI message to any units
configured as "Slaves".
Series B Ethernet units also support synchronization of their internal
clocks from an SNTP server (or up to three SNTP servers in MM FRN
2.5x or later), at a configurable synchronization interval. Since SNTP
servers operate in UTC (Universal Coordinated Time), a time zone for
the Powermonitor 3000 must also be configured for the correct time to
be set. The time zone is configured as an offset in hours from UTC
(formerly known as GMT).
You may configure network demand and time synchronization
options using the display module. This function is only supported on
Ethernet Series B Powermonitor 3000 units. The configuration menu
does not appear on other Powermonitor 3000 units. To set the
configuration options described below using the display module,
navigate through these menus: PROG. > PASS? > CONFIGURATION
> NETWORK DEMAND/TIME
.
You may also configure network demand and time synchronization
using communications, by writing to Table A.52
Input mode
Sets the unit network time sync mode. Range: 0 = Master command
input, 1 = Master status 2 input, 2 = Slave broadcast input, 3 = Slave
status 2 input (default)
Broadcast port
Sets the UDP port number for the master slave configuration. Range
300 to 400, default 300