Dwyer PPM User Manual
Page 2

MPM, APM, PPM, & LTI Series Modbus
®
Register Tables
Serial Communication
Page 2
WARNING
As is typical with most instruments, the addition of serial communications carries an inherent risk; it allows a remote operator to change
the operation and/or characteristics of the device being digitally communicated with. Inappropriate communication could have serious
consequences in meter or system operation.
Ultimately, it is up to the system designer to provide for the safe operation of a process. But certainly, no single event should make the
difference between a safe situation and a catastrophe. Please use the appropriate level of caution when implementing serial
communication.
CAUTION: If the Interlock Relay function is being used on any MPM, APM, PPM, or LTI meter, its proper operation can be
affected by inappropriate digital communications. Please take the steps necessary to provide for reliable interlock protection.
Disclaimer
The information contained in this document is subject to change without notice. Dwyer Instruments, Inc. makes no representations or
warranties with respect to the contents hereof; and specifically disclaims any implied warranties of merchantability or fitness for a
particular purpose.
Register Trademarks
Modbus
®
is a Registered Trademark of Schneider Automation Inc. All other trademarks mentioned in this document are the property of
their respective owners.
© 2010 Dwyer Instruments, Inc. All rights reserved.