MSC-XD0816L Product Manual
Ground lines. A straight through cable should be used when connecting between a computer’s RS-232 serial
interface and the device. This interface can be used up to 115.2 Kbits/sec.
This device also comes equipped with an RS-485 serial interface, which provides a 2 wire differential signal
interface for extended distance and high speed applications. This interface is 120 ohm terminated by default for
use as an endpoint of 2 or more RS-485 connected devices.
Pin #
Name
Function
1,4,6,7 NC
Not Connected
2
TX
RS-232 Transmit
3
RX
RS-232 Receive
8
D+
RS-485 Data Positive
9
D-
RS-485 Data Negative
5
GND
Ground
DE-9 Pin Numbers
6.3 GPIO Auxiliary Interface
A GPIO (General Purpose I/O) auxiliary interface is provided on a female DB-25 connector and provides
additional control and status functionality.
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Pin #
Name
1
GP1
14
GP2
2
GP3
15
GP4
3
GP5
16
GP6
4
GP7
17
GP8
5
GP9
Pin #
Name
18
GP10
6
GP11
19
GP12
7
GP13
20
GP14
8
GP15
21
GP16
9
GP17
22
GP18
Pin #
Name
10
GP19
23
GP20
11
GP21
24
GP22
12
GP23
25
GP24
13
Ground