User Manual of EM760 High-Performance Inverter For the entire communication network, the inverter as a slave must have its own unique address. Its setting range is 1 to 247. That is, a network supports 247 slave stations at most. * 0 is the broadcast address, which does not need to be set. All slave inverters can be recognized. The slaves and hosts attached to the same network must follow the same sending and receiving principles (e.g. baud rate, data format, and protocol format) to ensure normal communication. Hence, the network devices must have the same settings for function codes ofF10.01 (baud rate) and F10.02 (data format).
During the communication based on the Modbus-RTU protocol, the EM760 series inverter supports six different baud rates in bps (bit/s). Take F10.01=9600bps as an example. It means that data is transmitted at a rate of 9600bits per second. By default, each byte consists of valid 8-bit data (such as 0x01). When 10-bit data needs to be transmitted in the actual situation, the transmission time is about 1.04ms (approximately 1.04167ms=10bit/9600bps). 164 Function code Function codename Parameter description Unit Default setting Attribute F10.00 Local Modbus communication address 1-247; 0:
broadcast address 1 O Function code Function codename Parameter description Unit Default setting Attribute F10.01 Baud rate of Modbus communication 0: 4800 1: 9600 2: 19200 3: 38400 4: 57600 5: 115200 bps 1 O Function code Function code name Parameter description Unit Default setting Attribute F10.02 Modbus data format 0: 1-8-N-1 (1 start bit + 8 data bits + 1 stop bit) 1: 1-8-E-1 (1 start bit + 8 data bits + 1 even parity check bit + 1 stop bit) 2: 1-8-O-1 (1 start bit + 8 data bits + 1 odd parity check bit + 1 stop bit) 3: 1-8-N-2 (1 start bit + 8 data bits + 2 stop bits) 4: 1-8-E-2 (1 start bit + 8 data bits + 1 even parity check bit + 2 stop bits) 5:
1-8-O-2 (1 start bit + 8 data bits + 1 odd parity check bit + 2 stop bits) 0 O