SYNOPSIS
int modbus_set_debug(modbus_t *ctx, int flag);
DESCRIPTION
The modbus_set_debug() function shall set the debug flag of the modbus_t
context by using the argument flag. By default, the boolean flag is set to
FALSE
. When the flag value is set to TRUE
, many verbose messages are
displayed on stdout and stderr. For example, this flag is useful to display the
bytes of the Modbus messages.
[00][14][00][00][00][06][12][03][00][6B][00][03] Waiting for a confirmation… <00><14><00><00><00><09><12><03><06><02><2B><00><00><00><00>
RETURN VALUE
The function shall return 0 if successful. Otherwise it shall return -1 and set errno.
AUTHORS
The libmodbus documentation was written by Stéphane Raimbault <stephane.raimbault@gmail.com>