User manual

ULTRA 530.LPCI User Manual

RS-422/485/530 Pin Assignments (DB25 Male)

Signal Name Pin # Mode

GND Ground 7

RDB RX+ Receive Positive 16 Input

RDA RX- Receive Negative 3 Input

CTSB CTS+ Clear To Send Positive 13 Input

CTSA CTS- Clear To Send Negative 5 Input

DSRB DSR+ Data Set Ready Positive 22 Input

DSRA DSR- Data Set Ready Negative 6 Input

DCDB DCD+ Data Carrier Detect Positive 10 Input

DCDA DCD Data Carrier Detect Negative 8 Input

TDB TX+ Transmit Positive 14 Output

TDA TX- Transmit Negative 2 Output

RTSB RTS+ Request To Send Positive 19 Output

RTSA RTS- Request To Send Negative 4 Output

DTRB DTR+ Data Terminal. Ready Positive 23 Output

DTRA DTR- Data Terminal Ready Negative 20 Output

TXCB TXC+ Transmit Clock Positive 12 Input

TXCA TXC- Transmit Clock Negative 15 Input

RXCB RXC+ Receive Clock Positive 9 Input

RXCA RXC- Receive Clock Negative 17 Input

TSETB TSET+ Terminal Timing Positive 11 Output

TSETA TSET- Terminal Timing Negative 24 Output

Note: These assignments meet the EIA/TIA/ANSI-530 DTE specification

with the exception of Ring Indicator, which is not specified. It has been

included here for compatibility with systems requiring Ring Indicator.