Agilent Technologies RS-232, Инструкция по эксплуатации

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RS-232 and RS-485 Options for the senTorr Gauge Controller
1-4
DRA
FT
❑
RS–232 Standard
Table 1-4 lists the serial port pin-outs of the standard 9-pin connector for both
standard and null modem operation. Table 1-5 lists DIP switch SW1 settings to select
the signal output mode. The factory setting is for the null modem mode.
Table 1-4 RS–232 Signal Communications
Signal Null Modem Pin Standard Pin Description
Gnd 5 5 Signal Ground
TXD 3 2 Transmitted Data
RXD 2 3 Received Data
RTS 8 7 Request To Send
CTS 7 8 Clear To Send
DTR 4 4 Data Terminal Ready
Table 1-5 RS–232 Null Modem or Standard Selection
Switch Number Null Modem Setting Standard Setting
SW1-1 closed open
SW1-2 open closed
SW1-3 closed open
SW1-4 open closed
SW1-5 closed open
SW1-6 open closed
SW1-7 closed open
SW1-8 open closed