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4.1 Operation
Saving the Menu Configuration
Once the menu entries have been selected and tested to provide the desired system
response and stability, the menu can be stored into non-volatile memory. One full
configuration can be saved to memory at a time. The menu is stored by using the
"Save Data" menu entry. To save the Supervisor configuration, scroll to the "Save
Data" menu line using the up-arrow [↑] or the down-arrow [↓] key. Press the star
key [*] to enable an action to occur. Next, press the down-arrow key [] to
decrement the save code from 1 to 0. Then use the up-arrow key [↑] to increment
the save code to 77. (The save code will increment from 0 to 11, 22, 33, 44, 55, 66 and
then 77.) When 77 is reached, press the enter key. The Supervisor will then save
the entire configuration to memory and respond by changing the save code to 0
when the operation is complete. The save code value will remain 0 until the next
time power or reset is cycled to the Supervisor. When the Supervisor is initialized,
the save code is initialized to a 1. Therefore, a save code of 0 indicates that the
storage memory has been updated at least once since the last time the Supervisor
was initialized.
I Note: The Supervisor is shipped with factory values that should satisfy the
control requirements of most installations. If changes are made to the
default settings that cause the SENTRY 1510 to respond poorly, these
values can be re-entered. The factory values can be found in Section 7.
Operating the SENTRY 1510 through the Process Tool Controller
The SENTRY 1510 is normally operated through the process tool controller. The set
point is typically set up similarly to a mass flow controller or to an LPCVD closed-
loop pressure controller. Refer to the appropriate process tool controller manual.
(For interfacing instructions, see the "SENTRY Supervisor Operation Manual and Serial
Communications Programmer’s Guide.")
Menu set-up for use with the Process Tool Controller
If the Supervisor has been used in a stand-alone mode, the menu may have to be
changed to allow the process tool controller to communicate. The following menu
items should be checked:
BaudRate: If using an RS422/RS485 interface, the baud rate must match that of
the process tool controller. (Maximum baud rate is 9600 baud.)
CtrlLock: This item must be disabled to allow control from the process tool
controller.
Cycle: This item must be disabled.
StptMode: If using an RS422/RS485 interface, this item must be set to Single.
With a 0-5 V analog signal, this item must be set to Analog.
CtrlMode: This item should be set to closed loop (Cls_Lp).
Instructions how to change these menu items are given at the start of this section.
A full list of menu parameters and their use can be found in the “SENTRY Supervisor
Operation Manual”.
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