Black Box IC456A-R3, Руководство пользователя

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RS-232
↔
RS-422 INTERFACE CONVERTER
14
Figure 3-6. Signal Flow Diagram B.
RS-232
(Port is DCE)
RS-422
(Port is DTE)
12 Terminal Ready A (-)
30 Terminal Ready B (+)
DTR
20
CR8
(RS-422 DSR LED) 11
29
Data Mode A (-)
Data Mode B (+)
DSR 6
CR9
(RS-232 DSR LED)
CTS 5
9
27
Clear to Send A (-)
Clear to Send B (+)
CR4
(RS-232 CTS LED)
RTS
4
7
25
Request to Send A (-)
Request to Send B (+)
CR5
(RS-422 CTS LED)
4
22
Send Data A (-)
Send Data B (+)
TD 2
CR6
(RS-422 DATA LED)
6
24
Receive Data A (-)
Receive Data B (+)
RD 3
CR7
(RS-232 DATA LED)
CD 8
13
31
Receiver Ready A (-)
Receiver Ready B (+)
TXC 15
5
23
Send Timing A (-)
Send Timing B (+)
RXC 17
8
26
Receive Timing A (-)
Receive Timing B (+)
ETXC 24
17
35
Terminal Timing A (-)
Terminal Timing B (+)
Signal
GND
7
19
20
37
Signal GND
Receive Common
Transmit Common
* Note: The optional jumper is removed (factory default
RS-232 <--> RS-422 Signal Flow Diagram
Chassis
GND
1
Optional Jumper
*
SW1 A
SW1 B
(Arrows indicate the direction of signal flow.)
1
Chassis
GND
or Frame
GND
↔