Campbell-scientific MD485 RS-485 Multidrop Interface Uživatelský manuál stáhnout pdf (Strana 66)

Appendix H. MD485 Port Pin Descriptions

H-2

RS-232 CONNECTOR, 9-PIN D-SUB FEMALE

PIN I/O FUNCTION

1 +5V DCD

2 O RXD

3 I TXD

4 NC DTR

5 GND GND

6 +5V DSR

7 NC RTS

8 O CTS

9 NC RI

I = Signal Into the MD485, O = Signal Out of the MD485, NC = No

Connection

RS-485 Port

RS-485 CONNECTOR, 3-PIN TERMINAL BLOCK

PIN I/O FUNCTION

1 GND Signal Ground

2 I/O 485_IO- (A)

3 I/O 485_IO+ (B)

I = Signal Into the MD485, O = Signal Out of the MD485

1 2 ... 61 62 63 64 65 66 67 68

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Campbell-scientific MD485 RS-485 Multidrop Interface Uživatelský manuál Strana 66