1MODBUS_MASK_WRITE_RE(3) libmodbus Manual MODBUS_MASK_WRITE_RE(3)
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6 modbus_mask_write_register - mask a single register
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9 int modbus_mask_write_register(modbus_t *ctx, int addr, uint16_t and,
10 uint16_t or);
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13 The modbus_mask_write_register() function shall modify the value of the
14 holding register at the address addr of the remote device using the
15 algorithm:
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17 new value = (current value AND 'and') OR ('or' AND (NOT 'and'))
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19 The function uses the Modbus function code 0x16 (mask single register).
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22 The function shall return 1 if successful. Otherwise it shall return -1
23 and set errno.
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26 modbus_read_registers(3) modbus_write_registers(3)
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29 Martijn de Gouw <martijn.de.gouw@prodrive.nl> The libmodbus
30 documentation was written by Stéphane Raimbault
31 <stephane.raimbault@gmail.com>
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35libmodbus v3.1.7 07/20/2023 MODBUS_MASK_WRITE_RE(3)