CAS NT-502A - RS232 C Communication and Data Handling

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8. Serial Communication (RS-232C)
1) RS232C connection
① How to Connect PC
Connect the serial port on the rear panel of the indicator to serial port of PC as follows.
RXD 3 ㅇ
-------------------------
ㅇ 2 Transmit Data
TXD 2 ㅇ
--------------------------
ㅇ 3 Receive Data
GND 7 ㅇ
--------------------------
ㅇ 7 Signal Ground
┌─
ㅇ 8 Carrier Detect
├─
ㅇ 20 Data Terminal Ready
└─
ㅇ 6 Data Set Ready
┌─
ㅇ 4 Request to Send
└─
ㅇ 5 Clear to Send
9 pin port(Female) 25 pin port(Male)
RS-232C port of NT-500 Series Serial port of computer
RXD 3 ㅇ
-------------------------
ㅇ 3 Transmit Data
TXD 2 ㅇ
--------------------------
ㅇ 2 Receive Data
GND 7 ㅇ
--------------------------
ㅇ 5 Signal Ground
┌─
ㅇ 1 Carrier Detect
├─
ㅇ 4 Data Terminal Ready
└─
ㅇ 6 Data Set Ready
┌─
ㅇ 7 Request to Send
└─
ㅇ 8 Clear to Send
9 pin port(Female) 9 pin port(Male)
RS-232C port of NT-500 Series Serial port of computer