Electronics; Dial-Up Modem - Emerson DL8000 Instruction Manual

DL8000 Preset Instruction Manual
With the front cover bolts removed, the lid hinges down to reveal the
electronic compartment.

1.2.2 Electronics

The DL8000's CPU sits inside the cast aluminum enclosure. The
DL8000 uses a highly innovative and versatile CPU with a backplane to
which the CPU, Power Input module, input/output (I/O) modules, and
communication modules connect. The DL8000 unit has nine module
slots, three of which (slots 1, 2, and 3) can house communication
modules.
The DL8000 uses a 12 volt dc Power Input module to convert 120 to
250 V ac external input power to the voltage levels required by the
unit's electronics and to monitor voltage levels to ensure proper
operation. For more information on the Power Input module, refer to
Chapter 3, Modules.
The DL8000 supports a number of I/O modules, which can satisfy a
wide variety of field I/O requirements (refer to Chapter 3, Modules). I/O
modules include:
 Analog Inputs (AI).
 Analog Outputs (AO).
 Discrete Inputs (DI).
 Discrete Outputs (DO).
 Digital Output Relay (DOR).
 Alternating Current Input/Output (ACIO).
 Advance Pulse Module (APM).
 Pulse Inputs (PI) – High/Low Speed.
 Resistance Temperature Detector Inputs (RTD).
 Thermocouple (TC)
®
 HART
In addition to the built-in serial interface (the Local Operator Interface,
or LOI) and an Ethernet connection, the DL8000 also supports the
following communications modules:
 EIA-232 Serial Communications.
 EIA-422/485 Serial Communications.
 Dial-up Modem.
Revised February-2016 Overview 1-5