Honeywell UDC2500 Manuale Utente

Lower Display 

Upper Display 

AUTO 3 

TO AUTO—AUTOMATIC MODE, LAST SP—The 
controller will return to the automatic mode and the 
last setpoint used before shed. 

SHD_SP 1010   

 

LSP 

CSP 

 

 

0 

1 

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 UDC Local or 
Remote setpoint used, and the LSP is unchanged. 

PCT 
EGR 

0 
1 

-20.0 to 20.0 

 

COMPUTER SETPOINT RATIO—Computer 
setpoint ratio. 

CSP_BI 1013  -999 to 9999 

 

COMPUTER SETPOINT RATIO—Computer 
setpoint ratio in Engineering Units. 

LOOPBK 1014  DIS  

ENAB 

0 
1 

LOCAL LOOPBACK tests the communications 
hardware. 

DISABLE—Disables the Loopback test. 

ENABLE—Allows loopback test. The UDC goes 
into Loopback mode in which it sends and receives 
its own message. The UDC displays PASS or FAIL 
status in the upper display and LOOPBACK in the 
lower display while the test is running. The UDC 
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.