Reference MVI56E-GSC/GSCXT ♦ CompactLogix or MicroLogix Platform
User Manual Enhanced Generic ASCII Serial Communication Module
Page 106 of 140 ProSoft Technology, Inc.
April 24, 2017
GSC.CONTROL Array
This tag array holds the Boolean tags that allow the ladder logic to request that
the module perform a ColdBoot or WarmBoot. When set to a value of 1 by logic,
the logic will form a special output data block, which will transfer the reboot
request to the module, where it will be executed.
As part of any restart operation, the module will send an input image block with
special block code of -1 to request the logic to send the configuration values held
in the GSC.CONFIG tag arrays. The logic will then form a special output image
block that sends the configuration data to the module. Once the module receives
and implements the configuration, it will set the GSC.CONTROL.ConfigDone bit
to a value of 1. At this point, if the Error/Configuration Word (page 130) shows no
errors (it shows a value of zero), the module has been successfully configured
and is read for normal operation.
GSC.UTIL Array
This tag array holds the tags needed for sample ladder logic sequencing and
control. You can think of these tags mostly as 'scratchpad' memory for the
sample logic to keep track of where it is in the processing cycle. These tags also
help control receiving strings longer than 200 characters.
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