modbus_mask_write_register man page on DragonFly

modbus_mask_write_register man page on DragonFly

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MODBUS_MASK_WRITE_RE(3)	       Libmodbus Manual	       MODBUS_MASK_WRITE_RE(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 modbus_mask_write_register() function shall return 1 if successful.
       Otherwise it shall return -1 and set errno.

SEE ALSO
       modbus_read_registers(3) modbus_write_registers(3)

AUTHORS
       Martijn de Gouw <martijn.de.gouw@prodrive.nl[1]> The libmodbus
       documentation was written by Stéphane Raimbault
       <stephane.raimbault@gmail.com[2]>

NOTES
	1. martijn.de.gouw@prodrive.nl
	   mailto:martijn.de.gouw@prodrive.nl

	2. stephane.raimbault@gmail.com
	   mailto:stephane.raimbault@gmail.com

libmodbus 3.1.0			  10/06/2013	       MODBUS_MASK_WRITE_RE(3)

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