EATON Powerware® Modbus® Card User’s Guide S 164201376 Rev C www.powerware.com 23Chapter 6 TroubleshootingProblem Possible Cause Corrective ActionThe Modbus Profilertool does notgenerate thefil filThe wrong communication port number wasentered in the profiler comX command.Verify the correct port number on yourcomputer that is connected to the ModbusCard.gprofiler.csv file The serial cable is not connected. Verify that the serial cable connections aresecure.Communicationdoesn’t workIncorrect communication parameters. Verify that the communication parameters areset to the desired baud rate, No parity, 8 databits, 1 stop bit, and no hardware handshaking.RS-485 communication lines are reversed. For two-wire networks. Verify that themaster RS-485 network signal TxD(+) isconnected to the Modbus Card RxD(+) inputsignal and the RS-485 network signal TxD(–)is connected to the Modbus Card RxD(–) inputsignal.For four-wire networks. Verify that all fourRS-485 network signals are connected to theterminal strip or DB-9 connector as illustratedin Table 1 on page 9 or Table 2 on page 10,respectively.See Chapter 3, “Wiring the Modbus Card” onpage 7 for more information.If the Modbus Card is the last device installedin the network chain or the length of thenetwork cable is excessive, terminationneeds to be enabled.Verify the termination settings (see“Termination” on page 10 for the correctsettings).J9 and J10 jumpers could be in the incorrectposition for your configuration.Verify the jumpers are in the correct position(see Figure 4 on page 5).The polling rate in the Building ManagementSoftware (BMS) application or Modbussoftware is set below 500 mS.The Modbus Card updates the status of theEaton equipment every 1000 mS. Configurethe BMS/Modbus application polling rate to500 mS or greater to ensure proper operation.