OVERVIEW
I-E96-309A
1 - 1
SECTION 1 - INTRODUCTION
OVERVIEW
The Digital Slave Module (IMDSM05) interfaces process field
inputs/outputs with the Multi-Function Processor and Logic
Master Module in the Infi 90 Process Management System.
There are sixteen I/O circuits on the DSM. These circuits may
be input or outputs. The DSM brings in sixteen separate digital
signals through the DSM I/O circuits to the master modules
for processing and monitoring. The DSM sends sixteen sepa-
rate digital signals through the DSM I/O circuits to process
control devices in the field. Digital control devices may be
relays, lamps, etc. A contact closure, switch or solenoid is an
example of a device that supplies a digital signal. Master mod-
ules provide the control functions; slave modules provide I/O
to the master modules. The DSM also works with the
Multi-Function Controller (MFC) master module.
This manual explains the purpose, operation and maintenance
of the Digital Slave Module (DSM). It addresses handling pre-
cautions and installation procedures. Figure
illustrates the
Infi 90 communication levels and the position of the DSM
within these levels.
INTENDED USER
System engineers and technicians should read this manual
before installing and operating the DSM. A module SHOULD
NOT be put into operation until this instruction is read and
understood. You can refer to the Table of Contents to find spe-
cific information after the module is operating.
MODULE DESCRIPTION
The DSM consists of a single printed circuit board that occu-
pies one slot in a Module Mounting Unit (MMU). It monitors
eight digital inputs and eight digital outputs. Twelve I/O cir-
cuits are isolated from each other; the remaining two pairs
share common positive input lines.
Two captive screws on the module faceplate secure it to the
MMU. Sixteen front panel LED status indicators (group A and
group B) display the input and output status.
The slave module has three card edge connectors for external
signals and power (P1, P2 and P3). P1 connects to common
(ground) and +5 VDC power (refer to Table
). P2 connects
the module to the slave expander bus to communicate with an
MFP/LMM master module (refer to Table
). Connector P3