Manual

5–3Interpret Module Status and Input Data
Publication 17716.5.99 - December 1995
BTR Word Descriptions
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Powerup Bit indicates if
a valid BTW has occurred
since powerup or since
last switched from
Program to Run mode.
Header must be 0010.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Error Words & Diagnostics displays
invalid BTW word # (060 BCD).
99 = invalid BTW length.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Mode Indication for Channel 2
Mode Indication for Channel 0
Mode Indication for Channel 3
Mode Indication for Channel 1
Output Status reflects current
operating state of outputs.
b12 = Output 0 b13 = Output 1
b14 = Output 2 b15 = Output 3
VALUES:
0 = OFF
1 = ON
word 3
word 2
word 1
0010
0 = unused channel
1 = Totalizer 3 = Highresolution Frequency (channels 0 & 1 or 2 & 3)
2 = Nonresettable Totalizer 4 = Direction Sensor (channels 0 & 1 or 2 & 3)
Indicates mode of operation that
channel is currently running in.
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Channel 0Channel 1
Prover Status indicates the current state of prover (value of bits in hex).
0 = prover not selected 4 = prover is returning on reverse leg (bidirectional only)
1 = prover not running, but active 5 = prover is done with run (BTR word 13/14 contains prover count value)
2 = prover running  past the 1st switch in forward leg 6 = prover not active & new store count A
3 = prover is done with forward leg and returning at this time 7 = prover not active & new store count B
 intermediate value returned (bidirectional only)
Overrange
Alarm
Overflow
Status
Prover
Status
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Channel 2Channel 3
Overrange Alarm
on if the frequency is > than
100kHz (frequencies > 100kHz
may not be accurately returned).
Acceleration Alarm
on if |acceleration value| is >
Acceleration Alarm Value
(BTW word 9, 19, 29, 39).
Overspeed Alarm
on if frequency is >
Highest Allowable Frequency
(BTW word 8, 18, 28, 38).
Overflow Status
toggles between 0101 every time a
rollover occurs. This bit is reset by
BTW word 1 (bits 0407).
Acceleration
Alarm
Overspeed
Alarm
Overrange
Alarm
Overflow
Status
Prover
Status
Acceleration
Alarm
Overspeed
Alarm
word 4
word 5
allall
all
T, NR T
T , NR T
if prover not active,
these bits toggle 6767 every
high transition of the gate
VALUES: 1= no or invalid BTW
0 = yes