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- modbus_mask_write_register(3)
- =============================
- NAME
- ----
- modbus_mask_write_register - mask a single register
- SYNOPSIS
- --------
- *int modbus_mask_write_register(modbus_t *'ctx', int 'addr', uint16_t 'and', uint16_t 'or');*
- DESCRIPTION
- -----------
- The *modbus_mask_write_register()* function shall modify the value of the
- holding register at the address 'addr' of the remote device using the algorithm:
- new value = (current value AND 'and') OR ('or' AND (NOT 'and'))
- The function uses the Modbus function code 0x16 (mask single register).
- RETURN VALUE
- ------------
- The function shall return 1 if successful. Otherwise it shall return -1 and set
- errno.
- SEE ALSO
- --------
- linkmb:modbus_read_registers[3]
- linkmb:modbus_write_registers[3]
- AUTHORS
- -------
- Martijn de Gouw <martijn.de.gouw@prodrive.nl>
- The libmodbus documentation was written by Stéphane Raimbault
- <stephane.raimbault@gmail.com>
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