Watlow CLS200, MLS300 and CAS200 - Manual (Page 75)

Chapter 3: Controller Parameter Descriptions
Communications Specification 69
This variable is currently used for deviation and process alarms. Process
alarms are automatically enabled at startup. If a deviation alarm is
turned on (its Alarm_Mask bit is set), then the alarm is disabled until the
process variable comes within the deviation range:
(PV
≤
SP + DEV - DB)
to
(PV
≥
SP - DEV + DB)
If the process variable is already in this range, the Alarm_Enable bit is
immediately set.
See the table on page 51 for alarm bits.
Output Override Percentage (67)
When a sensor failure occurs and the loop is in Automatic mode, the
loop switches to Manual mode at the output override percentage. If
users have configured an output override digital input, they set every
loop to the output override percentage when they change the polarity of
the output override’s digital input to the active state.
• Range: 0 to 32700 (0 to 100%).
• Default: 0.
AIM Fail Output (68)
This parameter is valid for the MLS controller only. It designates a
digital output for the MLS-AIM failure alarm. Setting this parameter to
0 disables it.
• Range: 0 to 34. (Setting this parameter to 0 disables the AIM fail out-
put.)
• Default: 0 (AIM fail output is disabled).