modbus_write_bit.txt
732 Bytes
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
modbus_write_bit(3)
===================
NAME
----
modbus_write_bit - write a single bit
SYNOPSIS
--------
*int modbus_write_bit(modbus_t *'ctx', int 'addr', int 'status');*
DESCRIPTION
-----------
The *modbus_write_bit()* function shall write the status of _status_ at the
address _addr_ of the remote device. The value must be set to `TRUE` or `FALSE`.
The function uses the Modbus function code 0x05 (force single coil).
RETURN VALUE
------------
The function shall return 1 if successful. Otherwise it shall return -1 and set
errno.
SEE ALSO
--------
linkmb:modbus_read_bits[3]
linkmb:modbus_write_bits[3]
AUTHORS
-------
The libmodbus documentation was written by Stéphane Raimbault
<stephane.raimbault@gmail.com>