66 Communications Specification
Chapter 3: Controller Parameter Descriptions
Bits 0 to 5 determine the output number for an event:
Segment Time (58)
This parameter represents the duration of a segment, in the time units
selected elsewhere (hours and minutes or minutes and seconds).
• Range: 0 to 59999.
• Default: 0.
Tolerance (59)
The tolerance parameter represents an user-defined allowable deviation
from setpoint. If the process goes above a positive tolerance value or
below a negative tolerance value, it is considered out of tolerance. See
also Tolerance Alarm Time (50). This value is also affected by precision.
• Range: –99 to 99.
• Default: 0.
Ramp/Soak Flags (60)
This parameter is a byte register for each loop that has a ramp-soak
profile assigned to it.
Here’s a picture of this byte:
Result Bit 5
Bit
4
Bit
3
Bit
2
Bit
1
Bit
0
No events 0 0 0 0 0 0
Digital output 1 is an
event
000001
Digital output 2 is an
event
000010
Digital output 3 is an
event
000011
Digital outputs 4 to
33 are events
... ... ... ... ... ...
Digital output 34 is
an event
100010
Bit Bit set to 0 Bit set to 1
0 The segment is within the toler-
ance time period.
The segment is out of
tolerance time period.
1 * The segment does not require
alarm acknowledgment. (Seg-
ment may be out of tolerance
but is not in tolerance alarm.)
The user must acknowl-
edge alarm. (Segment
may be within tolerance.)
2 Reserved
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