INTRODUCTION
I-E96-209A
4 - 1
SECTION 4 - OPERATING PROCEDURES
INTRODUCTION
This section explains the modes of operation, front panel indi-
cators and start-up procedures for the Logic Master Module
(IMLMM02).
MODES OF OPERATION
The logic master module (LMM) has three modes of operation:
EXECUTE, CONFIGURE, and ERROR mode. The mode can be
changed using an operator interface. A description of each
mode follows.
Configure Mode
The configure mode is used to enter or update the control
strategy.
Execute Mode
The execute mode is the normal mode of operation. In this
mode, the module executes the control strategy, updates the
outputs and communicates over the module bus and slave
expander bus.
Error Mode
The error mode occurs when a hardware or software error is
detected (refer to the troubleshooting section for corrective
action).
LED INDICATORS
Front panel module status indicators on the LMM provide a
visual indication of module operation.
Status LED
The LMM has a single status LED indicator. The status LED
has three states: solid green, flashing green and solid red. Solid
green means that the module is operating properly, executing
control strategies, updating outputs, etc. Flashing green
means that the module has been put in the configure mode, or
that a nonfatal error situation exists. Solid red means that a
fatal error has occurred (again, refer to the troubleshooting
section for corrective action). Figure
shows the location of
the status LED.