CONTENTS
6F8C0845
xvii
1 Overview of the Devicenet Module . . . . . 1
1.1 Features and System Configuration Examples of
the
DeviceNet Module (DN611) . . . . . . . . . . . . . . . . . . . . 1
1.2 Network Configuration of DeviceNet . . . . . . . . . . . . . . 3
1.2.1 Network Configuration . . . . . . . . . . . . . . . . . . . . . . . 3
1.2.2 Trunk line/drop line and maximum cable length . . . 4
1.2.3 Terminator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.3 Applicable Standards and Trademarks . . . . . . . . . . . . 7
1.4 Basic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4.1 Polling instruction/response . . . . . . . . . . . . . . . . . . . 8
1.4.2 Bit strobe instruction/response . . . . . . . . . . . . . . . . . 9
1.4.3 Synchronous/asynchronous mode and data
refresh cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
1.5 Specifications of the DN611 . . . . . . . . . . . . . . . . . . . 13
1.5.1 Function specifications . . . . . . . . . . . . . . . . . . . . . . 13
1.5.2 Number of mounting modules . . . . . . . . . . . . . . . . 14
2 Names and Functions of the Parts of
the DN611 . . . . . . . . . . . . . . . . . . . . . . . . 17
2.1 External Views, Dimensions, and Names of Parts . . 17
2.2 Functions of the Parts . . . . . . . . . . . . . . . . . . . . . . . . 21
3 Preparations for Operation (Hardware) 23
3.1 DN611 Setting Flowchart (Hardware) . . . . . . . . . . . . 23
3.2 Setting the Switches . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.2.1 DIP switches for operation mode/
communication rate setting . . . . . . . . . . . . . . . . . . 25
3.2.2 Rotary switches for node address setting . . . . . . . 27
3.3 Mounting in the Base Unit . . . . . . . . . . . . . . . . . . . . . 29
3.4 Connection to the Network . . . . . . . . . . . . . . . . . . . . 30
3.4.1 Connecting DeviceNet cables to network
connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.4.2 Connecting network connector to the DN611 . . . . 33
3.5 Network Power/Grounding . . . . . . . . . . . . . . . . . . . . 35
3.5.1 Network power supply method . . . . . . . . . . . . . . . . 35
3.5.2 Network power configuration method . . . . . . . . . . 36
3.5.3 Network power unit (24 VDC) . . . . . . . . . . . . . . . . 42
3.5.4 Network grounding . . . . . . . . . . . . . . . . . . . . . . . . . 43
3.5.5 Switching power on and off . . . . . . . . . . . . . . . . . . 44
3.6 Network Components . . . . . . . . . . . . . . . . . . . . . . . . 45