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MODBUS_RTU_GET_RTS(3) | libmodbus Manual | MODBUS_RTU_GET_RTS(3) |
NAME¶
modbus_rtu_get_rts - get the current RTS mode in RTUSYNOPSIS¶
int modbus_rtu_get_rts(modbus_t *ctx);DESCRIPTION¶
The modbus_rtu_get_rts() function shall get the current Request To Send mode of the libmodbus context ctx. The possible returned values are:•MODBUS_RTU_RTS_NONE
•MODBUS_RTU_RTS_UP
•MODBUS_RTU_RTS_DOWN
This function can only be used with a context using a RTU backend.
RETURN VALUE¶
The function shall return the current RTS mode if successful. Otherwise it shall return -1 and set errno.ERRORS¶
EINVALThe libmodbus backend is not RTU.
SEE ALSO¶
modbus_rtu_set_rts(3)AUTHORS¶
The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com>12/19/2018 | libmodbus v3.1.4 |