SC105 CS I/O to RS-232 Interface
2. Specifications
RS-232 9-Pin Male 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
DSR
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
+5 V
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
+12
V
Not
Used
9
In
TXD
SC105 receives on this line
2
