1. The Modbus Organization, Modbus Application Protocol Specification v1.1b,
http://www.modbus.org/docs/Modbus_Application_Protocol_V1_1b.pdf
2. The Modbus Organization, Modbus over Serial Line Specification and Implementation Guide v1.02,
http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
3. The Modbus Organization, Modbus Messaging On TCP/IP Implementation Guide V1.0b,
http://www.modbus.org/docs/Modbus_Messaging_Implementation_Guide_V1_0b.pdf
4. STMicroelectronics, STM32F10xxx Cortex-M3 programming manual, V3.0,
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/PROGRAMMING_MANUAL/CD00228163.pdf
5. STMicroelectronics, Connectivity line, ARM-based 32-bit MCU with 64/256 KB Flash, USBOTG, Ethernet, 10 timers, 2 CANs, 2 ADCs, 14 communication interfaces,
http://www.st.com/internet/com/TECHNICAL_RESOURCES/TECHNICAL_LITERATURE/DATASHEET/CD00220364.pdf