Measurement-computing Micro 488/EX rev.2.1 Bedienungsanleitung PDF herunterladen (Seite 24)

Section 2 Getting Started

2.10

2.5 Mode Selection

SW2-1 and SW2-2 set the major operating mode of the Micro488/EX. There are

four distinct modes of operation.

1. System Controller

2. Peripheral

3. Controller Pass-Thru

4. Peripheral Pass-Thru

As a System Controller, the Micro488/EX accepts simple high-level ASCII

commands from a serial host. It interprets these commands and performs the required

bus action to bi-directionally communicate with up to 14 IEEE devices. As a

Peripheral, the Micro488/EX becomes a bus device. It accepts simple high-level

ASCII commands from a serial host and interprets these commands and status to

communicate with another IEEE controller. Applications include computer controlled

automatic test systems. These modes of operation are discussed in Sections 3, 4 and 5.

The IEEE Controller Pass-Thru (RS-232 to IEEE Converter) mode allows a serial

host device to send data to a single IEEE bus peripheral. Applications include

interfacing a listen-only or addressable IEEE printer/plotter to a serial printer port.

Refer to Section 6 for more detailed information on the Controller Pass-Thru mode of

operation.

The Peripheral Pass-Thru mode is used when interfacing a serial device to an

IEEE controller. Data which is sent by the IEEE controller to the Micro488/EX is

transmitted out its serial port. Data received from the serial device is buffered by the

Micro488/EX until read by the IEEE controller. Refer to Section 7 for more detailed

information on the Peripheral Pass-Thru mode of operation.

The factory default is the System Controller mode.

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Measurement-computing Micro 488/EX rev.2.1 Bedienungsanleitung Seite 24