SUNFAR C300 95
C300 series of non-sensor current vector-control inverter manual
In Single-master system, there are 32 sites at most. There are one master site and
31 slave sites among these sites. The address range of slave is 0~30, 31 (1FH) is
broadcast communication address. The address of slave must is exclusive in the
network. Point to point mode is a special application of single master and
multi-slaves mode. That is one condition of one slave machine.
2.2. Protocol description
C300 series inverter communication protocol is a kind of serial master-slave
communication protocol, in the network, only one equipment, and master can build
a protocol, (Named as “Inquire/Command”). Other equipments, slaves response
“Inquire/Command” of master only by providing the data or doing the action
according to the master’s “Inquiry/Command”. Here, master is Personnel Computer,
Industrial Machine or Programmable logical controller, and the slave is inverter
.
Master not only visits some slave, but also sends the broadcast information to all
the slaves. For the single master “Inquiry/Command”, all of slaves will return a
signal that is a response; for the broadcast information provided by master, slave
needs not feedback a response to master machine.
2.2.1 Data format
3 kinds of data transmission format are optional:
⑴
1 bit start-bit, 8-bit data bits, 1 bit stop-bit and no check bit.
⑵
1 bit start-bit , 8-bit data bits, 1 bit stop-bit and odd check.
⑶
1 bit start-bit , 8-bit data bits, 1 bit stop bit and even check. It is also manufacture
setting.
2.2.2Baud rate
There are five kinds of baud rate, 1200bps, 2400 bps, 4800 bps, 9600 bps and
19200 bps.
2.2.3Communication mode
（
1
）
Point to point communication mode, which is master “Polling” and slave
“Responding”.
（
2
）
Setting the serial interface communication parameters by the keypad of
inverter. These parameters include local address, baud rate and data format.
2.2.4Communication rule
（
1
）
There are at least 5-byte startup interval time between data frames, only the
Master must set the same baud rate and data format of inverter
