Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 12]

CModbus	Arduino class library for communicating with Modbus devices over USB/RS232/485 (via RTU protocol)
Cmodbus_t	Master query structure: This includes all the necessary fields to make the Master generate a Modbus query. A Master may keep several of these structures and send them cyclically or use them according to program needs
CModbusBridge
CModbusMaster
CMotorLoad
COmronPID
COmronState
COmronVFD
▼COmronVFDState
Ctype_errorMX2
Cunion_errorFC
CPHApp
CPos3Analog
CPOT
CQuery
CRelay
CStatusLight
▼CStepperController
CStepperControllerParams
CTransactionSerial