BOOL IsSuccessReading;
WORD Value;

IsSuccessReading = Read(PLC, 1, MODBUS_RTU_REG_4X, 0, 0, TYPE_WORD, &Value);

PSW[256] = Value;

if (IsSuccessReading)
{
Write(HMI_LOCAL_MCH, 0, TYPE_PFW, 300, 0, TYPE_WORD, 10);
}
else
{
Write(HMI_LOCAL_MCH, 0, TYPE_PFW, 300, 0, TYPE_WORD, 20);
}



в этом примере