Black Box Secure Device Servers, 1101 manual Non RS-232 Serial Port Pinouts- LES1102A

1101 and 1102 Secure Device Servers

Table 3-1. RS-232 DB9 connector pinouts.

Signal	Pin	Definition
CD	1	Received Line Signal Detector
RXD	2	Received Data
TXD	3	Transmitted Data
DTR	4	Data Terminal Ready
GND	5	Signal Ground
DSR	6	Data Set Ready
RTS	7	Request To Send
CTS	8	Clear To Send
RI	9	Ring Indicator

3.3.1 Non RS-232 Serial Port Pinouts— LES1102A

Port 2 on the LES1102A can also be software selected to be an RS-485 or RS-422 port connected through the screw terminal block (pinout shown in Table 3-2.

Table 3-2. Non RS-232 serial port pinout for the LES1102A.

1+V DC IN

2GND

3RX+

4RX-

5TX+

6TX-

7+3.3V DC OUT

8 GND

Figure 3-2. Front panel of the LES1102A showing pinout connections on the left side.

RS-422 uses a full-duplex transmit on TX+/TX- pair, receive on RX+/RX- pair.

RS-485 uses half-duplex over single pair. The LES1102A supports half duplex “party-line” communications over a 2-wire RS-485 bus (D+/D-). This is enabled by choosing the RS-485 option (instead of RS-232 or RS-422) for “Signaling Protocol” from the “Serial Port: Configuration” link on the

16 724-746-5500 blackbox.com