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4 gpib/rs-232c command list – AMETEK SLM Series Rev B User Manual

Page 44

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GPIB/RS-232 Programming Operation

SLM-Series AC/DC Electronic Load

4-2

M540072-01 Rev B

The connections for the rear panel RS-232 interface are shown below; Figure 4-1a
depicts the connector wire diagram, and Figure 4-1b depicts the connections using a
standard RS-232 cable.

RS-232C Port

On SLM Mainframe

TxD
Rxd

RTS
CTS

.
.
.

Inside the

SLM Mainframe

TxD

Rxd

RTS

CTS

DSR

GRN

DCD

DTR

PC RS-232C Port

TxD

Rxd

RTS
CTS

.
.
.

Fig. 4.1a

Fig. 4.1b

2
3
4
5
6
7
8
9

RS-232C Port

On SLM Mainframe

TxD
Rxd

RTS
CTS

.
.
.

Inside the

SLM Mainframe

TxD

Rxd

RTS

CTS

DSR

GRN

DCD

DTR

PC RS-232C Port

TxD

Rxd

RTS
CTS

.
.
.

Fig. 4.1a

Fig. 4.1b

2
3
4
5
6
7
8
9

Figure 4-1 RS-232 Interface Diagram

The following RS-232 setting commands are channel-dependent commands except
”CHAN” which is a channel-specific command; therefore, for proper program execution
”CHAN” should be sent first, and then the channel-dependent command.

For example:

Short ON of Channel 1 of SL-series Electronic Load module, the RS-232
programming command is: CHAN 1;SHOR ON.

As with the GPIB commands, the following RS-232 commands with [GLOB:] option
can set all the SL-series Electronic load modules in the SLM chassis to be active
simultaneously. This feature can greatly reduce the testing time and increase
efficiency.

4.4 GPIB/RS-232C COMMAND LIST

4.4.1

Command Syntax Abbreviations

SP

:Space, the ASCII code is 20 Hexadecimal.

;

:Semicolon, Program line terminator, the ASCII code is OA Hexadecimal.

NL

:New line, Program line terminator, the ASCII code is OA Hexadecimal.

N

:Integer from 1 to 8.

NR2 :Digits with decimal point. It can be accepted in the range and format of ##.#####.

Example: 30.12345, 5.0