Brookfield YR-1 Rheometer - Manual (Page 52)

Brookfield Engineering Labs., Inc. Page 52 Manual No. M02-215-B0412
APPENDIX E - Communications
Communications
1. Serial (RS-232) Communications Parameters
Baud Rate 9600
Data Bits 8
Stop Bits 1
Parity None
Handshake None
2. RS-232 Output During The Test
All output that occurs immediately before and after the test is described in Section III.4. That
pre- and post- test output is sent out both the serial (RS-232) and parallel ports. When using
the Brookfield Computer Cable (Brookfield part # DVP-80), the YR-1 will output a data string
during the actual yield test run. This data is ONLY sent out to the RS-232 port for use with the
EZ-Yield TM software.
The following output is sent to the serial (RS-232) port at the end of every Base Increment period:
xxxxxx:yy.yy:ttt.t:zz.zz
where the delimiter between all fields is a colon (:) character and
xxxxxx = The Base Increment count in hexadecimal format, padded with leading zeroes.
This is the time, in milliseconds that each reading was taken in the instrument.
yy.yy = % Torque value. % Torque is output with a resolution of 0.01% and a maximum
of 99.99%.
ttt.t = Temperature in °C.
zz.zz = Delta Torque (%). This is the actual change in percent torque, measured from the
previous reading, calculated at the end of each Base Increment period.
2
3
4
5
6
7
8
9
1
No Connection
Transmit Data (TxD)
Receive Data (RxD)
No Connection
No Connection
Serial Ground
Analog Ground
Analog % Torque
(Note 1)
Analog Temperature
(Note 2)
Notes:
1. This is a 0-1 volt d.c. output where 0 volts corresponds to 0% torque
and 1 volt corresponds to 100 % torque with a resolution of 1 millivolt
(0.1%).
2. This is a 0-4 volt d.c. output where 0 volts corresponds to -100 ºC and
4 volts corresponds to +300 ºC with a resolution of 1 millivolt (0.1 º C).
Figure E-1