Omega Vehicle Security 1400 manual Ieee 488 Interface Configuration Option, Ieee 488 Pinout

IEEE 488 Interface Configuration (Option)

The IEEE 488 interface option is intended for digital communication with IEEE 488 compliant computer platforms, as well as IEEE 488 compliant platform-independentconfigurations. Data is transmitted parallel, as opposed to serial. The IEEE 488 option allows for up to 15 devices to be connected to one bus; with a total bus length of up to 20 meters. Allowable cable distance between devices is up to 2 meters. Message transactions are hardware handshaked.

This section describes the configuration for ChartScan that will be commanded through the IEEE 488 bus when using ChartScan’s IEEE 488 interface option. To use this option, an IEEE 488 interface card must be installed in ChartScan’s interface slot and the rear panel DIP switch must be properly configured for IEEE 488. Note that all IEEE 488 bus devices, including ChartScan (when the IEEE 488 interface option is used) must have an IEEE 488 bus address. The micro-switches 4 through 8 (on the rear panel DIP switch) can be used to assign an IEEE 488 address. Switch setting are discussed in, IEEE 488 Configuration, presented shortly.

IEEE 488 Pinout

	IEEE 488 Pinout
Data Lines	Eight lines (D1 through D8) used to transfer data and commands between devices on the bus.
Handshake Lines	Used to handshake the transfer of information across the data lines.
DAV	DAV: Data Valid
NDAC	NDAC: Not Data Accepted
NRFD	NRFD: Not Ready for Data
Bus Management	Five bus management lines are used to control bus activities.
Lines	ATN: Attention
ATN
IFC	IFC: Interface Clear
REN	REN: Remote Enable
SRQ	SRQ: Service Request
EOI	EOI: End or Identity
Ground Lines	Eight ground lines used as follows: one for shield, one for general signal ground, and six logic
	ground lines (one for each of the following: DAV, NDAC, NRFD, ATN, IFC, and SRQ).

Specifications

Compliance Note:

•The IEEE 488 interface card is compliant with IEEE 488.2 specifications.

Installation Category:

•CE: Category 1

Implementation:

•SH1, AH1, T6, TE4, L4, LE4, SR1, PP0, RL0, DC1, DT1, C0, E1

Programmable Parameters:

•Alarm set points, thermocouple type, temperature units, trigger level, pre-trigger and post-trigger scan interval, trigger mode, SRQ mask, scan count, pre-trigger count, digital input, digital output, real time settings, data output format, and terminators.

Data Transfer Speed:

•Up to 1Mbyte/s

Connector:

•Standard IEEE 488 connector with metric studs

3-10 ChartScan User’s Manual