XGS-600 Gauge Controller
DRAFT 4/15/14
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Notes on Serial Communications
There are three selections for serial communications:
❑ RS232
❑ RS485
❑ BCD (requires the XGS-600 BCD model)
The RS232 and RS485 modes are ASCII protocols. Refer to Appendix B “ASCII Serial
Commands” for the list of commands and the command protocol. These are largely
backwards compatible with Multigauge using software revisions Ax.x (ie: A2.4 for example)
and all Sentorr controllers.
The pins for RS232 and RS485 are contained in the same connector housing. See
Appendix A “XGS-600 Gauge Specifications” for the pin specifications.
The BCD selection is a so-called packed-BCD protocol that was used on older Multigauge
controllers using software revisions Px.x (ie: P3.3 for example).
NOTE Sentorr never used the BCD protocol.
This protocol can only use the RS232 transceiver and is intended
for applications that require the XGS-600 to operate in older sys-
tems, where it is impossible to modify the system's software. While
this provides enhanced backwards compatibility with most appli-
cations, due to differences between the Multigauge and XGS-600
controllers it cannot guarantee backwards compatibility with ALL
applications. See Appendix C “BCD Serial Commands” for the list
of commands and command protocols.
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