12:
operating mode
0 = device in ‘run’ mode
1 = device in ‘program’ mode
13–17:
reserved
These bits are reserved and set to 0.
BTR Words 1–10: Point Reading
These words contain the value of parameter P920 (Reading) for points 1–10,
respectively. The reading is expressed as a percent of full scale, multiplied by 100,
giving a range of 0–10,000 which corresponds to 0.00%–100.00%. Refer to the
Milltronics device documentation for a definition of ‘P920’.
Note these values may contain numeric level data for inoperative or malfunctioning
points; refer to BTR word 0, and BTR words 11–20 for the actual operational status of
the measurement points.
BTR Words 11–20: Point Alarm and Status
These words contain the corresponding alarm and status bits for point 1–10,
respectively.
Bit status: 0 = false
1 = true
bit
description
(octal)
00
point not in operation
01
point failsafe timer expired
02
point failed (cable shorted, open, or transceiver problem)
03
point temperature sensor failed
04–14
reserved for future use
15
level emptying
16
level filling
17
scan mode priority
BTR Words 21–30: Returned Values, MPA
These words contain values requested by writing to words 1–4. The type of data and
format are specified with that request, and returned in block transfer read words 31–34.
PL-533
16
Milltronics SmartLink 3/31/97 1:16 PM Page 16
