14
Radio Operation with
RS-232
You can connect the HR-2000 with a computer or other data logging device
via RS-232. There are two communication modes for the HR-2000; normal
operation mode and listen mode. It is important that the ED-2000plus, the
HR-2000 and the external device all be set at a baud rate of 2400 for RS-232
communication.
In normal operating mode, the ED-2000plus and HR-2000 are in constant
contact and the HR-2000 screen reflects what the ED-2000plus screen
shows. Information can be sent to an external device by pressing the
DATA
SEND
key on the HR-2000.
In listen mode, the HR-2000 waits to receive an enquire code from the exter-
nal device, polls the ED-2000plus for the information, then returns it to the
external device.
To enter listen mode, use one hand to press and
hold
the
F
key and use the
other hand to press the
ALT
key. In listen mode the display shows the word
LISTEN and keys are nonfunctional.
Following is the format of the information sent to the external device:
xxxxx.x uu CR/LF
(if in LISTEN mode, a less than symbol (>), ASCII
code 62, is also sent after the line feed)
x
= force value
u
= unit of measure (LB, KG, KN or T)
CR/LF
= carriage return and line feed
The enquire code for the HR-2000 is a question mark plus a carriage return
(?,CR or ASCII Codes 63,13). When the HR-2000 receives this code from the
external device, the above information is sent.
The action of sending information or polling for information can introduce
delays in communication between the HR-2000 and ED-2000plus.
If your HR-2000 does not automatically detect the RS-232 connection, turn off
the unit, then power up by using one hand to press and
hold
the
ALT
key
and using the other hand to press the
ON
key. This forces the unit into RS-
232 operation.
The force value received is right
justified with any leading zeroes
replaced by spaces. Negative
values will show a minus sign
before the first digit. The
decimal point will not be printed
if it follows the significant
digits.
WARNING!
HR-2000 is intended to send
only force/weight readings.
Although the HR-2000 can
remotely configure an
ED-2000plus, unpredictable
output may result if Print or
Enquire actions occur while the
ED-2000plus is in configuration
mode.
