S7Communication Test
===

###### tags: `PLC` `Siemens`

- using
- using S7.Net;
- Initial a instance
- public Plc(CpuType cpu, string ip, port, Int16 rack, Int16 slot)
- var plc = new Plc(CpuType.S71500, "127.0.0.1", 105, 0, 1);
- open()
- plc.open();
- Read
- public byte[] ReadBytes(DataType dataType, int db, int startByteAdr, int count)
- plc.ReadBytes(DataType.DataBlock, DBid, 0, testSize);
- Write
- public void WriteBytes(DataType dataType, int db, int startByteAdr, byte[] value)
- plc.WriteBytes(DataType.DataBlock, DBid, 0, dummylist.ToArray());