MODBUS_WRITE_BIT(3) Libmodbus Manual 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 modbus_write_bit() function shall return 1 if successful. Otherwise it shall return -1 and set errno.
SEE ALSO modbus_read_bits(3)modbus_write_bits(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 3.0.3 05/26/2012 MODBUS_WRITE_BIT(3)
Check Out this Related Man Page
MODBUS_GET_RESPONSE_(3) Libmodbus Manual MODBUS_GET_RESPONSE_(3)NAME
modbus_get_response_timeout - get timeout for response
SYNOPSIS
void modbus_get_response_timeout(modbus_t *ctx, struct timeval *timeout);
DESCRIPTION
The modbus_get_response_timeout() function shall store the timeout interval used to wait for a response in the timeout argument.
RETURN VALUE
There is no return values.
EXAMPLE
struct timeval old_response_timeout;
struct timeval response_timeout;
/* Save original timeout */
modbus_get_response_timeout(ctx, &old_response_timeout);
/* Define a new and too short timeout! */
response_timeout.tv_sec = 0;
response_timeout.tv_usec = 0;
modbus_set_response_timeout(ctx, &response_timeout);
SEE ALSO modbus_set_response_timeout(3)modbus_get_byte_timeout(3)modbus_set_byte_timeout(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 3.0.3 05/26/2012 MODBUS_GET_RESPONSE_(3)
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