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92 PRODIGIT
Chapter 4 Remote control programming operation
4-1. Introduction
The rear panel remote control interface of 3270 Series mainframe is designed to connect PC
or NOTEBOOK PC with remote control interface, the NOTEBOOK PC acts as a remote
controller of 3270 Series Electronic Load.
This feature can be used as an automatic load/cross load regulation and centering voltage
testing for a switching power supply or an rechargeable battery charge/discharge
characteristic testing. The function capability of rear panel remote control interface not only
can set the load level and load status, but also can read back the load voltage and load
current.
NOTE: When use USB/LAN interface controls the 3270 Series, the 3270 Series will
convert the USB/LAN interface to RS232 interface.
4-2. The summary of RS232 Interface and command
The following RS232 commands are same as GPIB commands. The RS232 protocol in 3270
Series mainframe is listing below:
Baud-rate
Parity
Data bit
Stop bit
Handshaking ：Hardware (RTS/CTS).
The RS232 Interface connector of 3270 Series rear panel, RS232 is shown in Fig4-1.
RS232 port on PC
TxD
RxD
RTS
CTS
: 9600~115200bps
: None
: 8 bits
: 1 bit
RS232
port
on
3270 Load
RxD
TxD
CTS
RTS
.
.
.
Inside of 3270 Series Mainframe
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