Installation and Commissioning

Troubleshooting Tools2.9 Analog I/O, DSQC 355Bus status LED’sBus staus LED’sAnalog I/ODSQC 355X8 X7S2 S3X2X5 X3ABB flexible AutomationN.URS232 RxCAN Rx+5V+12VMSN.URS232 TxCAN Tx-12VNSDesignation Colour Description/RemedyNS/MS Green/red See section 2.14.RS232 Rx Green Indicates the state of the RS232 Rx line.LED is active when receiving data.If no light, check communication line and connections.RS232 Tx Green Indicates the state of the RS232 Tx line.LED is active when tranceiving data.If no light when transmission is expected, checkerror messages and check also system boards inrack.+5VDC / +12VDC /-12VDC Green Indicates that supply voltage is present and atcorrect level.Check that voltage is present on power unit.Check that power is present in power connector.If not, check cables and connectors.If power is applied to unit but unit does notwork, replace the unit.Product Manual 21