[KBA-78973] Reader data is incorrect when using Mercury MR52 v3 as the last panel on the bus - Synergis™ Softwire 10.4 - 10.9

series
Synergis™ Softwire 10.4 - 10.9
revised_modified
2019-03-21

[KBA-78973] Reader data is incorrect when using Mercury MR52 v3 as the last panel on the bus

This article explains why the data coming from the reader is incorrect when you use a Mercury MR52 v3 as the last interface panel on the RS-485 bus of the EP controller.

Applies to: Synergis™ Softwire 10.4 - 10.9 | Mercury MR52 v3 firmware 3.20.0, 3.20.3, 3.20.4 and 3.20.13

Symptoms

Cards are read incorrectly and you receive incorrect data when you present a badge. This issue occurs with the following scenario: You are using reader 1 on the Mercury MR52 v3 panel and the reader set to Standard Magstripe. You are not using reader 2 and it is set to the default Standard Wiegand setting. If you switch the setting for reader 2 to Standard Magstripe, it causes reader 1 to start reading data incorrectly.

Cause

A Mercury firmware issue.

Workaround

Replace the panel with a Mercury MR52 v2 panel or upgrade the firmware on your Mercury MR52 v3 panel to version 3.21.3 or later.

Status

This issue is fixed with Mercury MR52 v3 panels running firmware 3.21.3 or later.