WESTLOCK CONTROLS CORPORATION
280 N. MIDLAND AVE., STE. 258, SADDLE BROOK, NJ 07663 TEL: 201-794-7650 FAX: 201-794-0913
www.westlockcontrols.com
10/5/2013
TECH-477/D.W.O. 21424
Page 54 of 206
The supported modes are:
Remote-Cascade (RCas) – The set point is being update through the RCAS_IN
parameter.
Automatic (Auto) - The input function block calculated the output using the value
provide by the transducer block; the output function block value will
calculate the device setpoint using the value received from the host
system. The Physical Block and Transducer Block are able to work
normally.
Manual (Man) - The output value of the block is set by the user.
Local Override (LO) - Fault state or an interlock is active and causing the output
value of the block to be overridden. This is not a valid target mode, but is a valid
actual mode.
Out of Service (O/S): the transducer block and function blocks stop updating the
measure values and the actuation values; the physical block stop updating the
DIAGNOSIS and DIAGNOSIS_EXTENSION.
Each function block has different mode setting available for its target mode as shown in the
table below.
Table 8-1
Block Modes Available
Mode Description & Numeric Value
Physical Block
Transducer Block
AI
AO
Remote-Output (Rout)
0x01 not
used
Remote-Cascade (Rcas)
0x02
√
Cascade (Cas)
0x04 not
used
Automatic (Auto)
0x08
√
√
√
√
Manual (Man)
0x10
√
A
√
√
Local Override (LO)
0x20
Initialization Manual (IMan)
0x40 not
used
Out of Service (OOS)
0x80
√
√
√
√
Notes: A – When the Transducer Block is in Man mode the AO channel is not processed and the valve position can be set by the working
sp transducer parameter (WORKING_SP)
