
Series 902 Piezo
Table of Contents
Package Contents ..................................................................... 7
Symbols Used in this Manual .................................................... 8
Safety Precautions .................................................................... 9
General Specifications ............................................................ 10
Feature and Control Locations ................................................ 11
902 Piezo ...............................................................................................11
Optional Piezo Display Module ..............................................................11
About the 902 Piezo ................................................................ 12
Typical Applications for the 902 Piezo ..................................... 13
Installing the 902 Piezo ........................................................... 14
Transducer Installation ............................................................................14
Location ...........................................................................................14
Orientation .......................................................................................14
Contamination ..................................................................................14
Vacuum Connection ...............................................................................14
Electrical Connection .............................................................................15
Input/Output Wiring ..........................................................................15
902 Piezo Electrical Connections Table ...........................................16
Relay Inductive Loads and Arc Suppression ..........................................16
Piezo Display Module Connection .......................................................... 17
Operation................................................................................. 18
902 Piezo Factory Defaults Table ...........................................................18
RS-485 Protocol .....................................................................................19
Standard Addresses ........................................................................19
Universal Addresses ........................................................................19
Query and Command Syntax ...........................................................19
Response Syntax (ACK/NAK) .........................................................20
RS-485 Command Set ............................................................ 21
Set Up Commands ................................................................................. 21
Address – AD ..................................................................................21
Analog Output Format – DAC .......................................................... 21
Baud Rate – BR ...............................................................................21
Factory Default – FD ........................................................................22
Unit – U ............................................................................................22
User Tag – UT ..................................................................................22
Status Commands..................................................................................22
Device Type – DT .............................................................................22
Firmware Version – FV .....................................................................22
Hardware Version – HV ....................................................................23