# Classes and Modules

These classes are bus couplers and are used to connect the IO bus terminals to a Ethernet interface.

```{toctree}
:maxdepth: 1
:caption: Bus coupler:
BK9000
BK9050
BK9100
WAGO_750_352
```

```{toctree}
:maxdepth: 1
:caption: Beckhoff bus terminals:
KL1002
KL1012
KL1032
KL1052
KL1104
KL1114
KL1124
KL1154
KL1164
KL1184
KL1194
KL1212
KL1232
KL1302
KL1304
KL1312
KL1314
KL1352
KL1362
KL1382
KL1402
KL1404
KL1408
KL1412
KL1414
KL1418
KL1434
KL1488
KL1498
KL1501
KL1512
KL1702
KL1704
KL1712
KL1722
KL1804
KL1808
KL1809
KL1814
KL1819
KL1859
KL1862
KL1872
KL1889
KL2012
KL2022
KL2032
KL2114
KL2124
KL2134
KL2184
KL2212
KL2284
KL2404
KL2408
KL2424
KL2442
KL2488
KL2634
KL2808
KL2809
KL2828
KL2872
KL2889
KL3042
KL3054
KL3202
KL3214
KL4002
KL4004
KL4132
KL5121
```

```{toctree}
:maxdepth: 1
:caption: WAGO bus terminals:
WAGO_750_1405
WAGO_750_352
WAGO_750_530
WAGO_750_600
WAGO_750_602
```

```{toctree}
:maxdepth: 1
:caption: Generic bus terminals:
DigitalInputTerminal16Bit
DigitalInputTerminal4Bit
DigitalInputTerminal8Bit
DigitalOutputTerminal16Bit
DigitalOutputTerminal4Bit
DigitalOutputTerminal8Bit
```

These classes are base classes for devices and are typically not used directly.

```{toctree}
:maxdepth: 1
:caption: Base classes:
AnalogInputTerminal
AnalogOutputTerminal
BusCoupler
BusTerminal
DigitalInputTerminal
DigitalOutputTerminal
```

This modbus implementation is used internally.

```{toctree}
:maxdepth: 1
:caption: Modbus:
SimpleModbusClient
```