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PDF 232DRIO Data sheet ( Hoja de datos )
| Número de pieza | 232DRIO | |
| Descripción | Digital Relay I/O | |
| Fabricantes | B&B Electronics | |
| Logotipo |  |
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RS-232 Digital Relay I/O
Model 232DRIO
Documentation Number 232DRIO0812
pn#4520-r3
This product
Designed and Manufactured
In Ottawa, Illinois
USA
of domestic and imported parts by
B&B Electronics Mfg. Co. Inc.
707 Dayton Road -- P.O. Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Internet:
http://www.bb-elec.com
B&B Electronics – February 2012
232DRIO-0812 Manual
Cover Page
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
http://www.Datasheet4U.com
1 page  
Chapter 1- Introduction
232DRIO Features
The 232DRIO is a general purpose data acquistion controller that
is connected to your computer’s RS-232 serial port. The 232DRIO
offers 1 opto-isolated input and 2 relay outputs. With these features,
the controller can be used to sense external ON/OFF conditions and
to control a variety of devices.
The relay outputs are CMOS/TTL compatible. The optically
isolated AC/DC input are also CMOS/TTL compatible. For
maximum flexibility, both input and outputs are connected with
internal screw type terminal blocks. Three LEDs are provided to
monitor the status of each of these.
The 232DRIO connects to your computer’s RS-232 serial port
through a DB-9F connector. The unit communicates at a baud rate
of 9600, 8 data bits, no parity, and 1 stop bit. This unit can not be
powered through the handshake lines because of the higher current
requirement to drive the relays. However, the unit may be powered
by an external +12Vdc source brought in through the power pin, pin
#9 of the serial port. If the 232DRIO cannot be powered using the
previous method, it may be powered with +12Vdc @ 100mA through
the supplied terminal blocks. Power supply is available.
232DRIO-0812 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
3
5 Page 
There are only two basic commands required to control the
232DRIO: set output lines and read I/O lines. For normal
environments, command strings are from three to four bytes in
length; the “!” character, the “0” (zero) character, one command
character, and one data byte (if required).
With serial communications in a laboratory environment, the
possibility of a communication error occurring is minimal. However,
in a harsh or an industrial environment the possibility increases. A
communication error occurs when a bit transmitted as a “1” is
received as a “0” or vice versa. If the 232DRIO receives a error in
one or more of the first three command characters (“!0X”), the unit
will not execute the command. However, if the 232DRIO receives a
communication error on a data byte (I/O byte for Read Digital
command or state byte for Set Output State command), the
command will be executed since the unit has no way of knowing that
there was an error.
To provide the 232DRIO with a way of detecting errors in the
data fields, an additional set of commands can be used. This set of
commands begins with the “#” (23h) character, instead of the “!”
(21h) character. Refer to Table 3.1. With these commands every
data byte that is transmitted or received is followed by it’s
complement. For example, to read I/O lines:
Command syntax:
#0R
Response syntax:
{DATA}{~DATA}
Where “~” is used to indicate the “complement of.” If DATA has
a reading of 1, the following would be received:
{01}{FE}
Where FEh is the complement of 1. The complement of number
“x” can be calculated in QuickBasic as follows:
comp = (NOT x) AND &HFF
232DRIO-0812 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
9
11 Page | ||
| Páginas | Total 28 Páginas | |
| PDF Descargar | [ Datasheet 232DRIO.PDF ] | |
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