B&B Electronics 232SDD16 ユーザーズマニュアル
232SDD16-1005 Manual
5
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Chapter 2 - Connections
This chapter will cover the connections required for the
232SDD16. There are three sets of connections: digital I/O, serial
port, and power supply. Do not make any connections to the
232SDD16 until you have read this chapter.
port, and power supply. Do not make any connections to the
232SDD16 until you have read this chapter.
Digital I/O Connections
Connections to the I/O lines are made through the DB25S
(female) I/O port connector. Refer to Table 2.1. See Chapter 5 for
I/O interfacing examples.
Digital Inputs
I/O interfacing examples.
Digital Inputs
The digital input lines are CMOS/TTL compatible and can handle
voltages from 0Vdc to +5Vdc.
Digital Outputs
Digital Outputs
The digital output lines have a maximum voltage of +5Vdc and
are CMOS/TTL compatible.
Ground
Ground
The pin should be connected to your external digital devices
ground.
6 232SDD16-1005
Manual
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Serial Port Connections
In order to communicate to the 232SDD16 module it must be
connected to an RS-232 serial port. 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.
baud rates from 1200 to 9600. A data format of 8 data bits, 1 stop
bit and no parity is used.
The 232SDD16 is configured as a DCE
device (See Table 2.2). If your communications equipment is
configured as a DTE device, such as a standard IBM PC serial port,
the 232SDD16 should be connected using a “straight through” DB-
25 cable or a standard DB-9 to DB-25 cable adapter as shown in
Table 2.3. If your communications equipment is configured as a
DCE device, such as a modem, the 232SDD16 should be connected
using a “null modem” cable (See Table 2.4).
configured as a DTE device, such as a standard IBM PC serial port,
the 232SDD16 should be connected using a “straight through” DB-
25 cable or a standard DB-9 to DB-25 cable adapter as shown in
Table 2.3. If your communications equipment is configured as a
DCE device, such as a modem, the 232SDD16 should be connected
using a “null modem” cable (See Table 2.4).
Table 2.1 - 232SDD16 I/O Port Pinout
DB-25S
Pin #
Function
DB-25S
Pin #
Function
1 No
connection
14 I/O
#15
2 No
connection
15 I/O
#14
3 No
connection
16 I/O
#13
4 No
connection
17 I/O
#12
5 No
connection
18 I/O
#11
6 No
connection
19 I/O
#10
7 Ground
20 No
connection
8
+12Vdc Input
21
I/O #9
9
I/O #0
22
I/O #8
10
I/O #1
23
I/O #7
11
I/O #2
24
I/O #6
12
I/O #3
25
I/O #5
13 I/O
#4