modbus.setData()
modbus.setData(buffer)Backs the device Modbus slave register table with a script-managed bin buffer.
Points the device's Modbus TCP slave data table at a buffer allocated with
bin.alloc(). Remote clients then read and write your table; your script
updates it through the buffer's seek/read/write methods, guarded by
modbus.setLock().
Arguments
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| buffer | bin buffer | yes | — | Buffer from bin.alloc(bytes) sized for your registers (4 bytes per 32-bit value). |
Example
let mbData = bin.alloc(20*4); // room for float registers
modbus.setData(mbData); // expose as the slave data table