Rockwell Automation 44887-PUB, 44887 Enwatch - Manual (Page 5)

1 Publication GMSI10-UM031C-EN-E - January 2009
Chapter
1
Installing the Enwatch
This manual introduces you to the Allen Bradley Enwatch ® unit. The manual
is intended for anyone who installs, tests, or configures the Enwatch hardware.
It does not cover using the Enwatch unit to collect data. For information on
collecting data with the Enwatch unit, refer to the Online Applications Guide
provided with your Emonitor
®
online system.
Introduction Enwatch is a distributed network system providing 16 channels of analog
inputs together with 4 trigger channels. The unit includes signal conditioning
and analog to digital conversion. It allows you to connect 16 two-wire ICP or
other sensors into your Emonitor Online system. Each Enwatch unit is a
microprocessor-based system, complete with network controller that carries
out data acquisition tasks as directed by an Emonitor unload station. A typical
diagram for an Enwatch unit is shown in Figure 1.1, below.
Figure 1.1 Enwatch diagram
The Enwatch unit responds to all relevant network data exchanges as defined
by the Ethernet protocol using the UDP/IP standard. In addition, there is a
comprehensive on-board monitor program that can exercise all functions via
the on-board serial RS232 port.
ICP 1
ICP 2
ICP 16
15
:1 Bi
as
C
hec
k
HP Filters Intergrator
Programable
Gain
Select
gSE
A to D
Converter
Watchdog
Micro-
processor
Clock
Generator
Flash
SRAM
RS-232
4:
1
Au
x
.
Power
Regulation
Ethernet
Controller
10Base-T
Programable
Anti-Alias
Filter
External Trig. 1 - Event
External Trig. 4
DC in
CHANNEL
M
u
lt ip
le
x e
r