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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 RTU

SYNOPSIS
       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:

       o   MODBUS_RTU_RTS_NONE

       o   MODBUS_RTU_RTS_UP

       o   MODBUS_RTU_RTS_DOWN

       This function can only be used with a context using a RTU backend.

RETURN VALUE
       The modbus_rtu_get_rts() function shall return the current RTS mode if
       successful. Otherwise it shall return -1 and set errno.

ERRORS
       EINVAL
           The libmodbus backend is not RTU.

SEE ALSO
       modbus_rtu_set_rts(3)

AUTHORS
       The libmodbus documentation was written by Stephane Raimbault
       <stephane.raimbault@gmail.com[1]>

NOTES
        1. stephane.raimbault@gmail.com
           mailto:stephane.raimbault@gmail.com

libmodbus 3.1.0                   10/06/2013             MODBUS_RTU_GET_RTS(3)