B&B Electronics RS-232 Digital I/O Module 232SDD16 - Manual (Page 3)

232SDD16-1005 Manual 1
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Chapter 1- Introduction
232SDD16 Features
The 232SDD16 is a general purpose control module that is
connected to your computer’s RS-232 serial port. The 232SDD16
offers 16 discrete digital I/O lines. With these features, the module
can be used to sense external ON/OFF conditions and to control a
variety of devices.
The digital outputs are CMOS/TTL compatible. The digital inputs
are CMOS/TTL compatible. The digital I/O lines are available
through a DB-25S (female) connector.
The 232SDD16 connects to your computer’s RS-232 serial port
through a DB-25S connector. The unit automatically detects baud
rates from 1200 to 9600. A data format of 8 data bits, 1 stop bit and
no parity is used.
Configuration parameters are stored in non-volatile memory.
The configuration parameters consists of I/O definitions, and output
power-up states.
The unit may be powered by setting RTS and DTR high on the
serial port. If the 232SDD16 cannot be powered using the
handshake lines, it may be powered with +12Vdc through the 2.5mm
jack or through the DB-25 I/O connector.
NOTE: When using an external supply, the supply should be
connected only to specifically labeled power inputs (power
jack, terminal block, etc.). Connecting an external power supply
to the handshake lines may damage the unit. Contact technical
support for more information on connecting an external power
supply to the handshake lines.
Figure 1.1 - 232SDD16 Module
2 232SDD16-1005 Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Figure 1.2 - Simplified Block Diagram
Packing List
Examine the shipping carton and contents for physical damage.
The following items should be in the shipping carton:
1. 232SDD16 unit
2. Software
3. This instruction manual
If any of these items are damaged or missing contact B&B
Electronics immediately.