Parameter
Definition
LAST—SAME MODE AND OUTPUT—The controller will return to the same mode (manual or automatic) at the same output level that it had before shed.
TO MAN—MANUAL MODE, SAME OUTPUT—The controller will return to manual mode at the same output level that it had before shed.
FSAFE—MANUAL MODE, FAILSAFE OUTPUT—The controller will return to manual mode at the output value selected at Control prompt FAILSAFE.
TO AUTO—AUTOMATIC MODE, LAST SP—The controller will return to the automatic mode and the last setpoint used before shed.
SHED SETPOINT RECALL
Note: If SHEDENAB=DISABLE, this prompt will not be configurable.
TO LSP—Controller will use last local or remote setpoint used.
TO CSP—When in “slave” mode, the controller will store the last host computer setpoint and use it at the Local setpoint. When in “monitor” mode, the controller will shed to the last instrument Local or Remote setpoint used, and the LSP is unchanged.
COMPUTER SETPOINT UNITS
ENG — Engineering units
PERCENT — Percent of PV range
COMPUTER SETPOINT RATIO—Computer setpoint ratio.
COMPUTER SETPOINT BIAS—Computer setpoint bias in Engineering Units.
LOCAL LOOPBACK tests the RS-485 communications port. It is not used for any other communications port.
DISABLE—Disables the Loopback test.
ENABLE—Allows loopback test. The instrument goes into Loopback mode in which it sends and receives its own message. The instrument displays PASS or FAIL status in the upper display and LOOPBACK in the lower display while the test is running. The instrument will go into manual mode when LOOPBACK is enabled with the output at the Failsafe value. The test will run until the operator disables it here, or until power is turned off and on.
ATTENTION The instrument does not have to be connected to the external communications link in order to perform this test. If it is connected, only one instrument should run the loopback test at a time. The host computer should not be transmitting on the link while the loopback test is active.
