Black Box PCW22A-R3 Manual De Usuario
PROTOCOL CONVERTER A/S-2G
28
5.3 RS-232 CABLE CHART
RS-232C pins are defined as follows:
1 =
Chassis (or Frame or Protective) Ground
F-GND, C-GND, or P-GND
2 =
Transmit Data
TD or TXD
3 =
Receive Data
RD or RXD
4 =
Request to Send
RTS
5 =
Clear to Send
CTS
6 =
Data Set Ready
DSR
7 =
Signal Ground
S-GND
8 =
Carrier Detect
CD
15 =
Transmit Signal Element Timing (Clock)
T-CLK or TXCLK
17 =
Receive Signal Element Timing (Clock)
R-CLK or TXCLK
20 =
Data Terminal Ready
DTR
22 =
Ring Indicator
RI
Figure 5-1. The RS-232 Interface.
1
2
3
4
5
6
7
8
9
2
3
4
5
6
7
8
9
10
11
12
13
11
12
13
PROTECTIVE GROUND
TRANSMITTED DATA
RECEIVED DATA
REQUEST TO SEND
CLEAR TO SEND
DATA SET READY
SIGNAL GROUND/COMMON RETURN
RECEIVED LINE SIGNAL DETECTOR
+VOLTAGE
-VOLTAGE
TRANSMITTED DATA
RECEIVED DATA
REQUEST TO SEND
CLEAR TO SEND
DATA SET READY
SIGNAL GROUND/COMMON RETURN
RECEIVED LINE SIGNAL DETECTOR
+VOLTAGE
-VOLTAGE
SECONDARY RECEIVED LINE SIGNAL DETECTOR
SECONDARY CLEAR TO SEND
SECONDARY CLEAR TO SEND
14
15
16
17
18
19
20
21
22
23
24
25
15
16
17
18
19
20
21
22
23
24
25
SECONDARY TRANSMITTED DATA
DCE TRANSMITTER SIGNAL ELEMENT TIMING
SECONDARY RECEIVED DATA
RECEIVER SIGNAL ELEMENT TIMING
SECONDARY REQUEST TO SEND
DATA TERMINAL READY
SIGNAL QUALITY DETECTOR
RING INDICATOR
DATA SIGNAL RATE SELECTOR
DTE TRANSMITTER SIGNAL ELEMENT TIMING
PIN
NUMBER
PIN
NUMBER
NUMBER
SIGNAL
DESTINATION
SIGNAL
DESTINATION
RS-232 Interface