232XSSD43800 Manual
7
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5104
Important: All jumpers must be in the same position, either DCE or
DTE positions. Do not mix positions! Refer to Figure 3 which shows
the Master port configured as a DCE port.
CAUTION: Always power down the Smart Switch before removing
its cover.
Table 2. DCE MASTER PORT CHART
Pin #
Signal
Description
Signal
Direction of
DCE Master
Port
2
TD
Transmit Data
Input
3
RD
Receive Data
Output
4
RTS
Request to Send
Input
5
CTS
Clear to Send
Output
6*
DSR
Data Set Ready
Output
7
SG
Signal Ground
<------>
8*
CD
Carrier Detect
Output
20
DTR
Data Term Ready
Input
14**
TD (B)
Tr
Output
15**
TD (A)
Transmit -
Output
16**
RD (B)
R
Input
17**
RD (A)
Receive -
Input
* Pins 6 & 8 are tied together inside the 232XSSD4 and
share the same output. Refer to Figure 5.
** 422 master port option.
