Special Functions
6-3-2. Free Format Communication
Communication Mode:
Free Communication
Start Symbol (1 byte) Data Block (max. 128 bytes) End Symbol (1 byte)
z Baud Rate: 300bps~115.2Kbps
z Data Format
Data Bit: 7bits、8bits
Check Bit: Odd、Even、No Check
Stop bit: 1 bit、2 bits
z Start Symbol: 1 bit
End Symbol: 1 bit
User can set a start/end symbol, after set start/end symbol, PLC will automatically add this
start/end symbol when sending data; remove this start/end symbol when receiving data.
z Communication Format: 8 bits、16 bits
If choose 8 bits cushion format to communicate, in the communication process, the high
bytes are invalid, PLC only use the low bytes to send and receive data.
Free format communi ta in the format of data bloc can transfer 128
bytes at mo eanwh n set a sta ol and end sym ot set.
cation transfer da
ile e ck ca
k, each block
st. M ach blo rt symb bol, or n
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