PTI SENTRY TIM-100 - Read-Back Commands

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5.1 Serial Communication Interface Programming
TIM-100/120 Normal Acknowledgment
For both pressure and flow set point commands, the TIM-100/120 responds with the following
acknowledgment.
TIM-100/120 to Host Response: >A↵
Function: This response indicates an acknowledgement without error.
Note:
• Refer to Appendix C for error response codes.
Actual Read-Back Using Command “L”
A read-back command (interrogation) must be sent to the SENTRY TIM-100/120 in order to
request the actual process exhaust value. Depending on whether the exhaust controller is a
pressure or flow controller, one of two memory locations must be addressed for this command.
A mask is used to define the memory location.
Pressure Read-Back
In order to read the current pressure, the following command must be issued to the TIM-
100/120:
Host to TIM-100/120 Command Message: >01L00016E↵
Function: This message sends an interrogation to read the SENTRY TIM-100/120
pressure read-back memory location. The TIM-100/120 must be configured
for pressure control (i.e. SENTRY 1000 or SENTRY 1510).
Note:
• The SENTRY TIM-100/120 addressed is at base address 0, memory bank 1
(>01S00016E↵).
• A report on memory location “0001” (Pres) is being requested (>01S00016E↵).
Flow Read-Back
In order to read the current flow, the following command must be issued to the TIM-100/120:
Host to TIM-100/120 Command Message: >01L00026F↵
Function: This message sends an interrogation to read the SENTRY TIM-100/120 flow
read-back memory location. The TIM-100/120 must be configured for flow
control (i.e. SENTRY 9000).
Note:
• The SENTRY TIM-100/120 addressed is at base address 0, memory bank 1
(>01S00026F↵).
• A report on memory location “0002” (Flow) is being requested (>01S00026F↵).