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Table 2. DCE MASTER PORT CHART
Master Port
(DCE)
Pin#
Direction
2
Input
3
Output
4
Input
5
Output
6
Input
7
GROUND
8
Output
20
Input
Table 3. DTE MASTER PORT CHART
Master Port
(DTE)
Pin#
Direction
2
Output
3
Input
4
Output
5
Input
6
Output
7
GROUND
8
Input
20
Output
The 232SS2 supports the following RS-232 signals: TD, RD, SG,
RTS, CTS, DSR, DCD, and DTR.
The Smart Switch selects port A as the default port at power up.
Serial Data Configuration
In order for the host device that is connected to the master port
to select any of the four 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 5 selects
7 or 8 data bits. Switch position 6 determines if parity is enabled or
disabled.
NOTE: A data format of 7 data bits, no parity and one stop is
not allowed.
232SS21600Manual
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104
Signal
Description
Transmit Data (TD)
Receive Data (RD)
Request to Send (RTS)
Clear to Send (CTS)
DCE Ready (DSR)
Signal Ground (SG)
Recv. Line Detect (DCD)
DTE Ready (DTR)
Signal
Description
Transmit Data (TD)
Receive Data (RD)
Request to Send (RTS)
Clear to Send (CTS)
DCE Ready (DSR)
Signal Ground (SG)
Recv. Line Detect (DCD)
DTE Ready (DTR)
A,B,C & D Ports
(DTE)
Pin#
Direction
2
Output
3
Input
4
Output
5
Input
6
Output
7
GROUND
8
Input
20
Output
A,B,C & D Ports
(DCE)
Pin#
Direction
2
Input
3
Output
4
Input
5
Output
6
Input
7
GROUND
8
Output
20
Input
5
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