
MNL000443.doc
Revision 00
09/19/2016
© Versum Materials, Inc. as of the revision and date shown. All rights reserved.
Confidential and Proprietary Data
Page
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4.4.2 Available External I/O Communications
Digital Outputs
Response
Gas unavailable
Notify process tool that gas is
unavailable
Digital Inputs
Response
Process tool down
Prevent GASGUARD System from
flowing process gas
Process gas leak
Shutdown GASGUARD System
Remote Shutdown
Shutdown GASGUARD System
Vent system unavailable
Prevents automatic purge modes from starting
Emergency Stop
Hardwired shutdown of GASGUARD
System; local reset required
Master Solenoid Permissive
Hardwired permissive for master
solenoid; allows remote inhibit of
master solenoid
Supervised Inputs
Response
Remote Shutdown
Shutdown GASGUARD System