Basic Information For Programming; Introduction; 5.1.1 Setting The Gpib Address And Rs-232C Parameters; 5.1.2 Wire Connection Of Rs-232C - Chroma 63200 Series Operation & Programming Manual

5.

Basic Information for Programming

5.1

Introduction

The following sections describe how to program the 63200 series electronic load remotely
from a GPIB controller or RS232C. The command set introduced here can be applied to all
63200 series electronic loads including 63203, 63204, that equipped with GPIB or RS232C.
Either GPIB or RS232C can be used one at a time. They cannot be used simultaneously. If
GPIB is used first in remote control, RS-232C will be disabled unless the machine is reset,
and vice versa.

5.1.1 Setting the GPIB Address and RS-232C Parameters

The electronic load is shipped with the GPIB address set to 5. The address can be only
changed via the "SYS" functional list menu (please see section 4.2.9). This menu is also
used to select the RS-232C interface, and specify the parameters such as baud rate and parity.

5.1.2 Wire Connection of RS-232C

The Electronic Load is shipped with the baud rate set to 115200, parity set to is None, and
data length 8 bits, stop1 bit. For RS-232C interface, only TxD and RxD signals are used for
data transfer. The RS-232C connector is a 9-pin D male connector. Following table shows
you the RS-232C connector pins and signals.
Pin No.
1
2
3
4
5
6
7
8
9
The connection between the computer (IBM PC compatible) and the Electronic Load is
illustrated below:
Input/Output
---
INPUT
OUTPUT
OUTPUT
---
INPUT
OUTPUT
INPUT
---
Basic Information for Programming
Description
+5V
RxD
TxD
DTR
GND
DSR
RTS
CTS
+5V
5-1