0000246: Investigate using RS485 instead of RS232 - MantisBT

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ID

Project

Category

View Status

Date Submitted

Last Update

0000246

Hall D Online

Controls

public

2012-04-19 12:16

2012-06-29 13:58

Reporter

wolin

Assigned To

ballard

Priority

normal

Severity

feature

Reproducibility

N/A

Status

resolved

Resolution

fixed

Platform

OS

OS Version

Summary

0000246: Investigate using RS485 instead of RS232

Description

RS485 allows daisy-chaining, and the NBX modules and many of our devices can talk RS485. If we use RS485 we won't need as many NBX modules.

Additional Information

One concerns is if the devices lose their RS485 addresses when power cycles. If so we'd have to reprogram them every time they get turned off or if the power cycles. The latter may not be often since we plan to have UPS power on most devices.

Tags

No tags attached.

Work by outside group for Hall D

No

Estimated man-weeks

1

Percentage complete

0

Actual man-weeks

0

Relationships

Notes
(0000392) ballard (developer) 2012-06-29 13:58	We don't have enough RS485 devices to make it worthwhile to investigate.

Issue History
Date Modified	Username	Field	Change
2012-04-19 12:16	wolin	New Issue
2012-04-19 12:16	wolin	Work by outside group for Hall D	=> No
2012-04-19 12:16	wolin	Estimated man-weeks	=> 1
2012-04-19 12:16	wolin	Percentage complete	=> 0
2012-04-19 12:16	wolin	Actual man-weeks	=> 0
2012-04-19 12:16	wolin	Status	new => assigned
2012-04-19 12:16	wolin	Assigned To	=> ballard
2012-06-29 13:58	ballard	Note Added: 0000392
2012-06-29 13:58	ballard	Status	assigned => resolved
2012-06-29 13:58	ballard	Resolution	open => fixed

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