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Table 3. DCE MASTER PORT CHART
Master Port
(DCE)
Signal
Pin# Direction
Description
3
Input
Transmit Data (TD)
2
Output
Receive Data (RD)
7
Input
Request to Send (RTS)
8
Output
Clear to Send (CTS)
4
Input
Data Terminal Ready (DTR)
6
Output
Data Set Ready (DSR)
1
Output
Data Carrier Detect (DCD)
5
<------->
Signal Ground (SG)
Table 4. DTE MASTER PORT CHART
Master Port
Signal
(DTE)
Pin# Direction
Description
3
Output
Transmit Data (TD)
2
Input
Receive Data (RD)
7
Output
Request to Send (RTS)
8
Input
Clear to Send (CTS)
4
Output
Data Terminal Ready (DTR)
6
Input
Data Set Ready (DSR)
1
Input
Data Carrier Detect (DCD)
5
<------->
Signal Ground (SG)
The 232XS5 supports the following RS-232 signals: TD, RD,
SG, RTS, CTS, DCD, DSR and DTR.
NOTE: All other lines are not connected.
The Smart Switch selects port A as the default port at power up.
232XS5-1005 Manual
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
A,B,C,D & E Ports
(DTE)
Pin# Direction
3
Output
2
Input
7
Output
8
Input
4
Output
6
Input
1
Input
5
<----->
A,B,C,D & E Ports
(DCE)
Pin# Direction
3
Input
2
Output
7
Input
8
Output
4
Input
6
Output
1
Output
5
<----->
5
Serial Data Configuration
In order for the host device that is connected to the master port
to select any of the five ports, the Smart Switch must be set to
match the host's communication format. Dipswitch "SW1" is used to
select the communication format of the Smart Switch. Switch
positions 1 through 3 select the baud rate. Switch position 4 selects
7 or 8 data bits. Switch position 5 determines if parity is enabled or
disabled.
NOTE: A data format of 7 data bits, no parity and one stop is
not allowed.
Switch position 8 selects the port configuration, see section
titled "Port Configuration". Refer to Table 1. Always power down
the smart switch when changing switch settings.
RS-485 Support
RS-485 support may be
provided by adding a Model
485SD9TB RS-232 to RS-485
converter or other recommended
device to the slave ports of the
232XS5.
Port power of about 30 mA may be applied through the DTR line
(Pin 4) of the slave ports with jumper JP1-JP5. Normally, the
jumpers are set to allow DTR to pass from the master port. To
enable port power on a slave port, move the jumper from the"OFF"
to "ON" position on the corresponding JP jumper. To allow DTR to
pass from the master port to the slave port, move jumper from "ON"
to "OFF" on the corresponding JP jumper. DTR can only pass
through when the port is selected and the jumper is set to the "OFF"
position on the corresponding slave port JP jumper.
Jumper
JP1-5
Setting
"OFF"
DTR passed *
"ON"
Port Power
Table 5. Port Power Jumpers
* = FACTORY DEFAULT
6
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445
232XS5-1005 Manual
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