Moxa ioPAC 8500-9-M12-C-T [40/66] Modbus rtu master

Moxa ioPAC 8020-5-M12-C-T [40/66] Modbus rtu master
Developer's Guide for Moxa RTU Controllers Programmer's Guide
2-32
Modbus/RTU Master
MX_Modbus_Rtu_Master_Open
INT32 MX_Modbus_Rtu_Master_Open(UINT32 port, TTY_PARAM *param);
This function is used to open and configure the external UART port.
Input Parameters
port
UART port number.
ioLogik W5348-C series: the port numbers are 0 and 1
ioPAC 8020-C series: the port number is 0
param
Fill this structure parameter to configure baudrate, parity, data-bits, stop-bit, mode, and
flow-control for the specific UART port.
Output Parameters
None
Return Value
MODBUS_ERR_OK
MODBUS_ERR_LIB_INIT
MODBUS_ERR_PARAM
MODBUS_ERR_UART_OPEN
MODBUS_ERR_OPENED
MODBUS_ERR_UART_MODE
MODBUS_ERR_UART_BAUDRATE
MODBUS_ERR_UART_FORMAT
MODBUS_ERR_UART_FLOW
MX_Modbus_Rtu_Master_Close (UINT32 port);
INT32 MX_Modbus_Rtu_Master_Close (UINT32 port);
This function is used to close the opened external UART port.
Input Parameters
port
UART port number.
ioLogik W5348-C series: the port numbers are 0 and 1
ioPAC 8020-C series: the port number is 0
Output Parameters
None
Return Value
MODBUS_ERR_OK
MODBUS_ERR_LIB_INIT
MODBUS_ERR_PARAM
MODBUS_ERR_NOT_OPENED

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