B&B Electronics 8 PORT SMART SWITCH CE 232D4SS8 User Manual
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Documentation Number 232D4SS84502 Manual
B&B Electronics Mfg Co – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Comm. Pk – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
Port Configuration
The 232D4SS8 has a Master port and eight selectable ports
labeled "A" through "H". Refer to “Rear View”. The Master port
should be connected to the RS-232 device that will be selecting the
ports. Ports "A - H” connect to the RS-232 or RS-422/485 devices
that will communicate with the Master port device.
Master Port
The Master port can be configured by the user as a DCE or a
DTE port. In order to determine the proper Master port
configuration of the 232D4SS8 it is necessary to have a basic
understanding of the terms DCE and DTE. RS-232 was designed,
using DB-25 connectors, for connecting a DTE (Data Terminal
Equipment) device to a DCE (Data Communication Equipment)
device. Each device will have inputs on pins that correspond to
outputs on the same pins of the other device. For example, a DTE
device transmits data out on pin 2 and a DCE device receives data
in on pin 2. IBM PC's are DTE devices, modems are DCE devices.
The Master port is shipped configured as a DCE port.
Table 1. Communication & Configuration Switch
DIP Switch 1
1
2
3
4
5
6
7
8
Setting
0
0
0
0
X
X
X
X
300 Baud
1
0
0
0
X
X
X
X
600 Baud
0
1
0
0
X
X
X
X
1200 Baud
1
1
0
0
X
X
X
X
2400 Baud
0
0
1
0
X
X
X
X
4800 Baud
1
0
1
0
X
X
X
X
9600 Baud *
0
1
1
0
X
X
X
X
19.2K Baud
1
1
1
0
X
X
X
X
38.4K Baud
X
X
X
X
0
X
X
X
8 Data Bits *
X
X
X
X
1
X
X
X
7 Data Bits
X
X
X
X
X
0
X
X
Smart Switch Mode *
X
X
X
X
X
1
X
X
Smart Switch and
Port Combiner Mode
X
X
X
X
X
X
0
X
3 Char. Command *
X
X
X
X
X
X
1
X
4 Char. Command
X
X
X
X
X
X
X
0
Port Select Test Off *
X
X
X
X
X
X
X
1
Port Select Test On
0 = OFF
1 = ON
X = DON'T CARE
* = FACTORY DEFAULT