Specifications

A - 4
CONTENTS
SAFETY PRECAUTIONS...............................................................................................................................A- 1
REVISIONS .....................................................................................................................................................A- 2
INTRODUCTION.............................................................................................................................................A- 3
CONTENTS.....................................................................................................................................................A- 4
About the Generic Terms and Abbreviations .................................................................................................A- 7
CHAPTER 1 BASICS OF ETHERNET NETWORK 1- 1 to 1-12
1.1 Ethernet ................................................................................................................................................... 1- 1
1.2 Addresses................................................................................................................................................ 1- 2
1.2.1 MAC address (Ethernet address)................................................................................................. 1- 2
1.2.2 IP address ..................................................................................................................................... 1- 3
1.3 Communication Protocol......................................................................................................................... 1- 6
1.3.1 Communication model.................................................................................................................. 1- 6
1.3.2 IP protocol ..................................................................................................................................... 1- 8
1.3.3 TCP and UDP ............................................................................................................................... 1- 9
1.4 MELSEC-Q Ethernet Module ................................................................................................................ 1-11
1.4.1 Role of Ethernet module.............................................................................................................. 1-11
1.4.2 Outline of Ethernet module.......................................................................................................... 1-12
CHAPTER 2 BEFORE USING ETHERNET MODULE 2- 1 to 2-24
2.1 Two Data Codes...................................................................................................................................... 2- 1
2.2 Types of Data Communication Functions .............................................................................................. 2- 3
2.2.1 Communication using MC protocol .............................................................................................. 2- 3
2.2.2 Fixed buffer communication ......................................................................................................... 2- 6
2.2.3 Communication using random access buffer .............................................................................. 2- 9
2.2.4 Communicability with external devices for each data communication function......................... 2-10
2.3 Open/Close Processing ......................................................................................................................... 2-11
2.3.1 Active open/close processing...................................................................................................... 2-17
2.3.2 Passive open/close processing ................................................................................................... 2-19
2.3.3 UDP/IP open/close processing ................................................................................................... 2-22
CHAPTER 3 SYSTEM CONFIGURATION 3- 1 to 3- 4
3.1 Applicable Systems................................................................................................................................. 3- 1
3.2 Devices Required for Network Configuration ......................................................................................... 3- 2
CHAPTER 4 SPECIFICATIONS OF ETHERNET MODULE & SETTINGS AND PROCEDURES PRIOR TO
OPERATION 4- 1 to 4-18
4.1 Performance Specifications .................................................................................................................... 4- 1
4.2 Ethernet Module Function List ................................................................................................................ 4- 3
4.3 Settings and Procedures Prior to Starting the Operation ...................................................................... 4- 5
4.4 Components of the Ethernet Module...................................................................................................... 4- 7
4.5 Connecting to the Network...................................................................................................................... 4- 8
4.6 Settings from GX Developer ................................................................................................................... 4- 9
4.7 Self-retrain Tests .................................................................................................................................... 4-14
4.7.1 Self refrain test .............................................................................................................................4-14
4.7.2 Hardware test...............................................................................................................................4-17