INTRODUCTION
WBPEEUI240756A0 4 - 1
SECTION 4 - OPERATING PROCEDURES
INTRODUCTION
This section explains the start-up and operating procedures for
the IMFEC1
module.
START-UP
To start up the IMFEC1
module:
1. Apply power to the module.
2. Place the controlling module (MFP/MFC) in execute mode.
Communication between the FEC module and the controlling
module begins automatically if there are no configuration
errors and the controlling module is in the execute mode.
Upon start-up, all channels are marked bad quality. The con-
troller sends the FEC module the transmitter configurations
and the FEC module begins checking each channel. If the mod-
ule detects a channel that is set up for an analog input (func-
tion code 132 only) and there are no other errors, the module
marks that channel good quality and begins checking the next
channel.
When the IMFEC11 module detects a channel that is set up for
a smart transmitter (a configuration containing function codes
132 and 133), it does a check of that channel. It reads the
actual configuration of the smart transmitter and compares it
to the configuration within the controlling module. If these
configurations are identical and there are no other errors, the
FEC module marks that channel good quality. If the module
detects a difference in the two configurations, the channel
remains bad quality and a configuration mismatch status
error occurs. The FEC module proceeds until it checks all 15
channels.
The IMFEC11 module periodically checks each channel having
a smart transmitter configuration by trying to communicate
with the transmitter on that channel. If a transmitter fails to
communicate, the module marks the channel bad quality and
a transmitter not responding status error occurs. If the
transmitter resumes communication, the module does a con-
figuration check (like the one made at start-up) of the device on
that channel. The module marks the channel as good or bad
quality depending on the results of the check.
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