Read Discrete Inputs
t, err = mbo:rdi(adr, fc, nc, [ms])
t, err = modbus.rdi(cpo, adr, fc, nc, [ms])
Read discrete inputs (Modbus function 02)
| Parameter | Type | Description |
|---|---|---|
mbo |
object table | Modbus Object |
cpo |
object | COM Port Object |
adr |
integer | Slave address |
fc |
integer | First coil to read |
nc |
integer | Number of coils to read |
ms |
integer | Receive timeout |
| Returns | Type | Description |
|---|---|---|
t |
table | Boolean values (one for each input) |
err |
string | Modbus error (if applicable) |
This is a bit access function.