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4.4.2 Word Pa rame ters
4-10 November, 2000 OM067-4
Sec tion 4
1
8
-DIN Digi tal In di ca tor 59039
RS485 Se rial Com mu ni ca tions Product Man ual - Vol ume I
Parameter
Process Variable (PV)
PV Maximum
PV Minimum
Time Elapsed
Instrument Status
PV Offset
Alarm 1 value
Alarm 2 value
Alarm 3 value
Alarm 1 Hysteresis
Alarm 2 Hysteresis
Alarm 3 Hysteresis
Filter Time Constant
Decimal Point Position
Scale Range Min.
Scale Range Max.
Recorder Output
Scale Max.
Recorder Output
Scale Min.
Manufacturer ID
Equipment ID
No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
121
122
Operation
Read Only *
Read Only *
Read Only *
Read Only *
Read Only
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read Only
Read Only
Notes
Only if Alarm 2 is configured
Only if Alarm 3 is configured
Only if Alarm 2 is configured
Only if Alarm 3 is configured
Read Only for non-linear inputs
Read Only for non-linear inputs
Read Only for non-linear inputs
Only if Recorder Output is
configured
Only if Recorder Output is
configured
= 231 (representing “W1")
number 8010
* When the process variable is over-range or under-range or when a
sensor break condition occurs, the value returned is:
Condition Hex. Signed Unsigned
Over-range F700 –2304 63232
Under-range F600 –2560 62976
Sensor Break condition F800 –2048 63488
The PV Max. parameter will return the Over-range value or Sensor Break
value (as appropriate) if either condition has occurred since the PV Max.
parameter was last reset.
The PV Min. parameter will return the Under-range value or Sensor Break
value (as appropriate) if either condition has occurred since the PV Min.
parameter was last reset.
The Time Elapsed parameter will return the Over-range value if the
time exceeds 1000 minutes.
NOTE: All these parameters return signed values except Time Elapsed
(which is unsigned) and Instrument Status (in which Bits 0 - 6 of the
status byte return Bit Parameters 1 - 7 respectively - see Subsection 4.4.1)