ProSoft Technology MVI56E-GSC - Page 82

Reference MVI56E-GSC/GSCXT ♦ CompactLogix or MicroLogix Platform
User Manual Enhanced Generic ASCII Serial Communication Module
Page 82 of 140 ProSoft Technology, Inc.
April 24, 2017
Note: For each termination type, you must also enter the corresponding parameters in the
following configuration tags:
GSC.PortX.RtermCnt
GSC.PortX.RtermCnt
GSC.PortX.RpacketLen
GSC.PortX.Rtimeout
GSC.PortX.Rdelay
GSC.PortX.WtermCnt
GSC.PortX.WtermChar
GSC.PortX.WpacketLen
GSC.PortX.Wtimeout
GSC.PortX.Wdelay
GSC.PortX.WMinDelay
Termination Type Field
If none of the bits are set (Type=0), the port will be configured for stream mode.
Any characters received on the port are immediately sent to the processor. The
processor must buffer and assemble a packet of information if this mode is
selected. If the data can be handled by the processor in this mode and it is
appropriate for your application, this is the fastest method of communication
between the device and the processor. However, stream mode tends to be
processor-intensive and does not work well in larger applications due to the
potential for loss of data. For larger applications, consider using one of the other
modes that allows the module to buffer incoming data from complete messages
before transferring it to the processor.
Any combination of termination types/bit settings is acceptable to the module and
should be set to match the device on the specific port. An example of each
termination type is given below.
Termination character(s) used