Burkert 8681 - Büs;Canopen Specification; General Data; Total Line Length and Drop Line Lengths of the Bus Cables

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büS/CAN open-Design
15.4 büS/CANopen specication
15.4.1 General data
Baud rate:    congurableviaDIPswitches7,8orviasoftware(selectablevalues–see
chapter “15.14.1Settingthebaudrate”)
factorysetting:softwarecongurablebaudrate(pre-selected:500kbit/s)
Address:
    1...63(viaDIPswitches1...6adjustable);
factorysettings:0=softwarecongurableaddress/NodeID
(NodeIDfrom1to127possible;
pre-selection:auto-addressingoftheNodeID,
see chapter “15.14.2SettingthebüS/CANopenaddress(NodeID)”)
Bus mode:
   büSorCANopen(busmodeissoftwarecongurableonly)
factory setting: büS
Process data: büS/CANopenore.g.EtherNet/IP(dependingonconguration)
Gateway /
SPS
6 byte
input
1 byte
output
Gateway /
EtherNet/IP
1(...6)byte
input
1 byte
output
(Congurationsforfurtherbussystemsonrequest)
Inputs: 6 byte with:
(Controlhead–>gateway) 4bytepositionfeedbackinm(resolution:1mm)
(=feedbackascyclicpositionsignalofthetarget),
1 byte NAMUR status feedback,
1bytepositionfeedback(3discretefeedbacksignalsfromthepositionmeasuring
system(positionsS1toS3)+1discretefeedbacksignalfromtheexternal
initiator(S4);
powersupplyviabüS/CANopencable(11...25VDC)
(The acyclic analogue position signal of the target can be read out e.g. as
parameter“8681_Current_Position_mm_DevXX”(resolution:0.1mm) - see
chapter “15.20Accesstoparameters(Read/Write)”onpage114)
Outputs:
1 byte for control of the 3 solenoid valves
(Gateway–>controlhead)
15.4.2 Total line length and drop line lengths of the bus cables
Thebuslineisa4-corecablewithadditionalshieldingwhichmustconformtothebüS/CANopenspecication.
Thecabletransmitsbothdata/informationandenergy(low-voltagepowersupplyforactuatorsandsensors)
Themaximumtotallinelength(sumoftrunklinesanddroplines)ofanetworkdependsonthe
baud rate.
Some baud rates and their corresponding maximum lengths are listed in the table below.
english
Control Head Type 8681