User guide

SC105 9-Pin to RS-232-DCE Interface

2. Specifications

RS-232 9-Pin Female Connector Pin-out:

Pin No

. I/O Name Description

1 In DCD Data Carrier Detect (No Connection)

2 In RXD Received Data

3 Out TXD Transmitted Data

4 Out DTR Data Terminal Ready

5 GND Signal Ground

6 In DS

Data Set Ready (No Connection)

7 Out RTS Request to Send – Modem Enable

8 In CTS Clear to Send

9 In Ring Rings Datalogger

CS I/O 9-Pin Male Connector Pin-out:

Pin No.

I/O Name Description

1 in +5V Regulated 5 Volt supply

2 GND Ground

3 out RING Ring signal to datalogger

4 out RXD SC105 transmits on this line

5 in ME Modem Enable—must be high for transfer in ME mode

6 in SDE Synchronous Device Enable

7 In CLK/HS Clock/Handshake (for synchronous communication)

8 +12V Not Used

9 in TXD SC105 receives on this line