Profibus Actuator Control Profibus DP Option Card Installation Manual
Profibus Actuator Control Profibus DP Option Card Installation Manual
Profibus Actuator Control Profibus DP Option Card Installation Manual
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SK1<br />
<strong>Profibus</strong> <strong>DP</strong> Mk2 <strong>Option</strong> <strong>Card</strong> <strong>Installation</strong> <strong>Manual</strong><br />
any stub connections. The last actuator on the highway should have the termination resistors<br />
connected by linking the highway 1B terminal to the highway 1 Terminator terminal and fitting the<br />
internal links LK1 and LK2 in the Terminate position; and by linking the highway 2B terminal to the<br />
highway 2 Terminator terminal and fitting the internal links LK3 and LK4 in the Terminate position.<br />
Take care to ensure that the correct polarity is observed on the data highway connection.<br />
Data line 1B is positive with respect to data line 1A when the PFU is transmitting a ‘1’.<br />
Data line A is also called TxD/RxD-N<br />
Data line B is also called TxD/RxD-P<br />
Both the Dual card options default to System Redundancy; this allows two separate highways to be<br />
used. When the RedCom compliant version is used the card uses RedCom extensions to the standard<br />
<strong>DP</strong> V1 protocol to permit redundancy to be used in a controlled manner. The host system should be<br />
able to support V1 messages and RedCom, if it cannot then the Simple redundant option should be<br />
used.<br />
Active termination resistors are included on the <strong>Profibus</strong> card. The jumper links LK1 to LK4 on the<br />
PNIC board are used to select the inclusion of these resistors.<br />
<br />
<br />
Fit LK1, LK2, LK3 and LK4 as shown to provide pull apart active termination to the<br />
network at this actuator and<br />
Link Terminals ‘Terminator 1’ and ‘<strong>Profibus</strong> 1A’ and ‘Terminator 2’ to ‘<strong>Profibus</strong> 2A’ to add<br />
end of line termination<br />
LK4<br />
LK3<br />
LK2<br />
LK1<br />
EPROM<br />
Links shown<br />
in 'Terminate'<br />
position<br />
LK1<br />
SK3<br />
SK5 SK7 SK10<br />
SK8<br />
SK2<br />
Fig 18: Dual Highway Active Termination Links for SR mode<br />
26 of 66 Publication S420E V3.0 Issue 01/05