W7500S2E serial to Ethernet module
W7500S2E user manual
30
C1_PARITY (Parity bit)
Command format
Parameters
Usage
AT+C1_PARITY?
Nil
Read
AT+C1_PARITY=<parameter>
0: Disable (Default)
1: Odd
2: Even
Set
Response
[C1_PARITY] Value is:<value>\r\nOK\r\n
Example
Command: AT+C1_PARITY=0\r\n
Response: [C1_PARITY] Value is:0\r\nOK\r\n
C1_SER_C (Serial flow control / RS-485 enable output)
Command format
Parameters
Usage
AT+C1_SER_C?
Nil
Read
AT+C1_SER_C=<parameter>
0: Disable flow control (default)
1: Enable serial CTS/RTS hardware flow control
2: Enable 485EN pin
Set
Response
[C1_SER_C] Value is:<value>\r\nOK\r\n
Example
Command: AT+C1_SER_C=1\r\n
Response: [C1_SER_C] Value is:1\r\nOK\r\n
This command with parameter equal 1 enables the hardware serial flow control. This may improve the
data accuracy for high speed transmission.
Note: This command with parameter equals 2 will enable the 485EN pin. The RTS pin becomes RS-485
enable output for connecting external 485 chips. 485EN pin is supported by firmware version 2.3 and
above.
C1_BUF_CLS (Clear Buffer if Connected)
Command format
Parameters
Usage
AT+C1_BUF_CLS?
Nil
Read
AT+C1_BUF_CLS=<parameter>
0: Disable (default)
1: Enable
Set
Response
[C1_BUF_CLS] Value is:<value>\r\nOK\r\n
Example
Command: AT+C1_BUF_CLS=1\r\n
Response: [C1_BUF_CLS] Value is:1\r\nOK\r\n
This command is valid only in TCP modes & “data pass-through mode”.
There may be data in the serial buffer which not being sent out in case of disconnection. Enable this
command clears the buffer when establishing TCP connection.