Examples with ReadMultipleRegistersResponse com.ghgande.j2mod.modbus.msg.ReadMultipleRegistersResponse used on opensource projects

Example 1 with ReadMultipleRegistersResponse

use of com.ghgande.j2mod.modbus.msg.ReadMultipleRegistersResponse in project openems by OpenEMS.

the class ModbusBridge method queryMultipleRegisters.

/**
 * Executes a query on the Modbus client
 *
 * @param modbusUnitId
 * @param address
 * @param count
 * @return
 * @throws OpenemsModbusException
 */
private Register[] queryMultipleRegisters(int modbusUnitId, int address, int count) throws OpenemsModbusException {
    ModbusTransaction trans = getTransaction();
    ReadMultipleRegistersRequest req = new ReadMultipleRegistersRequest(address, count);
    req.setUnitID(modbusUnitId);
    trans.setRequest(req);
    try {
        trans.execute();
    } catch (ModbusException e) {
        // try again with new connection
        closeModbusConnection();
        trans = getTransaction();
        req = new ReadMultipleRegistersRequest(address, count);
        req.setUnitID(modbusUnitId);
        trans.setRequest(req);
        try {
            trans.execute();
        } catch (ModbusException e1) {
            throw new OpenemsModbusException(// 
            "Error on modbus query. " + "UnitId [" + modbusUnitId + "], Address [" + address + "/0x" + Integer.toHexString(address) + "], Count [" + count + "]: " + e1.getMessage());
        }
    }
    ModbusResponse res = trans.getResponse();
    if (res instanceof ReadMultipleRegistersResponse) {
        ReadMultipleRegistersResponse mres = (ReadMultipleRegistersResponse) res;
        return mres.getRegisters();
    } else {
        throw new OpenemsModbusException(// 
        "Unable to read modbus response. " + "UnitId [" + modbusUnitId + "], Address [" + address + "], Count [" + count + "]: " + res.toString());
    }
}

Example 2 with ReadMultipleRegistersResponse

use of com.ghgande.j2mod.modbus.msg.ReadMultipleRegistersResponse in project SmartApplianceEnabler by camueller.

the class ReadHoldingRegisterExecutor method execute.

@Override
public void execute(TCPMasterConnection con, int slaveAddress) throws ModbusException {
    logger.trace("{}: Reading holding register={} requestWords={}", getApplianceId(), getAddress(), getRequestWords());
    ReadMultipleRegistersRequest req = new ReadMultipleRegistersRequest(getAddress(), getRequestWords());
    req.setUnitID(slaveAddress);
    ModbusTCPTransaction trans = new ModbusTCPTransaction(con);
    trans.setRequest(req);
    trans.execute();
    ReadMultipleRegistersResponse res = (ReadMultipleRegistersResponse) trans.getResponse();
    if (res != null) {
        Integer[] byteValues = new Integer[res.getWordCount()];
        for (int i = 0; i < res.getWordCount(); i++) {
            byteValues[i] = res.getRegisterValue(i);
        }
        logger.debug("{}: Holding register={} value={}", getApplianceId(), getAddress(), byteValues);
        getValueTransformer().setByteValues(byteValues);
    } else {
        logger.error("{}: No response received.", getApplianceId());
    }
}