modbus.tbh

type modbus_socket
	socket as byte
end type

' Read Input Registers
#define MODBUS_ADC_INPUT_REGISTER_HEX 0
#define MODBUS_ADC_INPUT_REGISTER_FLOAT 100
#define MODBUS_COUNTER_INPUT_REGISTER 200
#define MODBUS_BP_LIST_PORT1_INPUT_REGISTER 300
#define MODBUS_BP_LIST_PORT2_INPUT_REGISTER 450
#define MODBUS_BP_LIST_PORT3_INPUT_REGISTER 600
#define MODBUS_BP_LIST_PORT4_INPUT_REGISTER 750

#define MODBUS_OW_LIST_PORT1_INPUT_REGISTER 1000
#define MODBUS_OW_LIST_PORT2_INPUT_REGISTER 1100
#define MODBUS_OW_LIST_PORT3_INPUT_REGISTER 1200
#define MODBUS_OW_LIST_PORT4_INPUT_REGISTER 1300
#define MODBUS_OW_LIST_PORT5_INPUT_REGISTER 1400
#define MODBUS_OW_LIST_PORT6_INPUT_REGISTER 1500
#define MODBUS_OW_LIST_PORT7_INPUT_REGISTER 1600
#define MODBUS_OW_LIST_PORT8_INPUT_REGISTER 1700

#define MODBUS_DAC_HOLDING_REGISTER 0
#define MODBUS_PWM_PULSE_HOLDING_REGISTER 100
#define MODBUS_PWM_PERIOD_HOLDING_REGISTER 200

enum modbusFunc
	
	ReadCoilStatus = 1,
	ReadInputStatus = 2,
	ReadHoldingRegisters = 3,
	ReadInputRegisters = 4,
	ForceSingleCoil = 5,
	PresetSingleRegister = 6,
	ForceMultipleCoils = 15,
	PresetMultipleRegisters = 16

end enum

declare modbus_socks(MODBUS_SOCKS_MAX) as modbus_socket

declare function modbus_initialize() as boolean
declare sub modbus_tcp_receive(byref data as string, socketTCP as byte)

declare function modbus_set_holding_register(register as word, value as word) as boolean
declare function modbus_get_holding_register(register as word) as word
declare function modbus_get_input_register(register as word) as word