CONTENTS
6F8C0903
xv
1 Overview of the Devicenet Module . . . . . 1
1.1 Features and System Configuration Examples
of the
DeviceNet Module (DN311) . . . . . . . . . . . . . . . . . . . . 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5 Specifications of the DN311 . . . . . . . . . . . . . . . . . . . 12
1.5.1 Function specifications . . . . . . . . . . . . . . . . . . . . . . 12
1.5.2 Number of mounting modules . . . . . . . . . . . . . . . .13
2 Names and Functions of the Parts
of the DN311 . . . . . . . . . . . . . . . . . . . . . . 15
2.1 External Views, Dimensions, and Names of Parts . . 15
2.2 Functions of the Parts . . . . . . . . . . . . . . . . . . . . . . . . 16
3 Preparations for Operation (Hardware) 19
3.1 DN311 Setting Flowchart (Hardware) . . . . . . . . . . . . 19
3.2 Setting the Switches . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.1 DIP switches for operation mode/communication
rate setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.2.2 Rotary switches for node address setting . . . . . . . 23
3.3 Mounting in the Base Unit . . . . . . . . . . . . . . . . . . . . . 25
3.4 Connection to the Network . . . . . . . . . . . . . . . . . . . . 26
3.4.1 Connecting DeviceNet cables to network
connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
3.4.2 Connecting network connector to the DN311 . . . . 29
3.5 Network Power/Grounding . . . . . . . . . . . . . . . . . . . . 31
3.5.1 Network power supply method . . . . . . . . . . . . . . . .31
3.5.2 Network power configuration method . . . . . . . . . .32
3.5.3 Network power unit (24 VDC) . . . . . . . . . . . . . . . .37
3.5.4 Network grounding . . . . . . . . . . . . . . . . . . . . . . . . .38
3.5.5 Switching power on and off . . . . . . . . . . . . . . . . . .39
3.6 Network Components . . . . . . . . . . . . . . . . . . . . . . . . 40
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