DT568-SLIP/SLIDE ISSUE SED ON LDC LOGS, SPEED SENSOR ALARM WAS TRIGGERED DUE TO SLIP/SLIDE ON CHO2 SIDE. CHECKED CBTC TACHO NO ABNORMALITIES. DO CHECK ON YOUR SIDE CHO AXLE AND WHEEL SLIP/SLIDE ON DT568. ~~~~~ DT568-SLIP/SLIDE ISSUE     #3568 Checked Tims FC: 322,BCU WSP timer 1 activated(time out)Measured tachogen 1 to 4 (1kohm) reading stable no fluctuations.Proceed to replace BCU and set wheel dia.To monitor for W/S/S during depot shunting. BCU-New s/n: 1745013  Old s/n: 1824071 Not: 2261210 Done by Saini/Sateesh. 27/03/21