Table 1 lists the specifications for the MEMOBUS/Modbus communications. Table 1. MEMOBUS/Modbus Specifications Item Specification Interface RS-485 Synchronization method Asynchronous (start-stop synchronization) Communication parameter Communications speed:1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6, 76.8, 115.2 kbps Data length: 8 bit (fixed) Parity: even, odd, none Stop bit 1 bit (fixed) Communication protocol MEMOBUS/Modbus standard (RTU mode only) Number of possible units to connect Maximum: 31 units