1MODBUS_RTU_GET_RTS(3)          libmodbus Manual          MODBUS_RTU_GET_RTS(3)
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NAME

6       modbus_rtu_get_rts - get the current RTS mode in RTU
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SYNOPSIS

9       int modbus_rtu_get_rts(modbus_t *ctx);
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DESCRIPTION

12       The modbus_rtu_get_rts() function shall get the current Request To Send
13       mode of the libmodbus context ctx. The possible returned values are:
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15       •   MODBUS_RTU_RTS_NONE
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17       •   MODBUS_RTU_RTS_UP
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19       •   MODBUS_RTU_RTS_DOWN
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21       This function can only be used with a context using a RTU backend.
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RETURN VALUE

24       The function shall return the current RTS mode if successful. Otherwise
25       it shall return -1 and set errno.
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ERRORS

28       EINVAL
29           The libmodbus backend is not RTU.
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SEE ALSO

32       modbus_rtu_set_rts(3)
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AUTHORS

35       The libmodbus documentation was written by Stéphane Raimbault
36       <stephane.raimbault@gmail.com>
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40libmodbus v3.1.6                  02/04/2022             MODBUS_RTU_GET_RTS(3)
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