DC Power Supply
【
DC-10-D/DC-20-D/DC-10-DH/DC-20-DH
】
6. SERIAL Communication
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6. SERIAL Communication
This section describes serial communications according to RS-232C, RS-485.
6-1 Overview of SERIAL Communications
It has a communication interface that can be accessed from SERIAL PORT.
It can be operated directly by serial communication from the HOST computer.
The SERIAL PORT connector is a D-sub 9-pin male connector as shown in Fig. 6-1, which is
mounted on the back of the power supply.
SERIAL PORT
Figure 6-1: SERIAL PORT arrangement
6-1-1 Serial communication specifications
Communication specifications are as follows.
Communications protocol:
RS-232C/RS-485
Communication rate:
Selectable from 115200bps
/ 57600bps / 38400bps / 19200bps /
9600bps.
Data length:
8 bit
Stop bit:
1
Parity:
none
The contents of each SERIAL PORT connector pin are shown in Table 6-1 below.
Table 6-1: Description of SERIAL PORT pin
Pin No.
Signal name
Detail
1
Do not connect.
2
RS-232C RXD
Incoming data received by power supply.
3
RS-232C TXD
Data transmitted from DC power supply.
4
Do not connect.
5
GND
RS-232C, RS-485 signal GND. *1
6
Do not connect.
7
RS-485 TxD+/RxD+ Positive (+) signal of RS-485 differential signal. *2
8
RS-485 TxD-/RxD- Negative (-) signal of RS-485 differential signal. *2
9
Do not connect.
*1 Be sure to connect GND.
*2 For RS-485, it is recommended to use a twisted pair type of positive (+) and negative (-) signal
lines.
Summary of Contents for DC-10-D
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