167
Wiring for a CompoNet Network
Section E-3
E-3
Wiring for a CompoNet Network
A CompoNet Network requires wiring of following lines.
• Two communications signal lines:
BDH (or communications data high) and BDL (or communications data
low),
• Two communications power supply lines:
one for communications and the other for internal circuits of Slave Units.
The terminals are BS+ (or positive side of communications power supply)
and BS
−
(or negative side of communications power supply).
Wiring method differs by the type of used cables.
E-3-1
Wiring Round Cable I
The two communications signal lines are connected in parallel between the
Master Board or a Repeater Unit and multiple Slave Units.
• A DCN4-TB4 Open Type Connector is used to connect communications
cables to the Master Board or a Repeater Unit and to the Slave Units.
• The two communications power supply lines are connected to each Slave
Unit. They are different cables from the communications lines. The
communications power supply lines are to supply 24-VDC
communications power.
• No power line is connected to the Master Board or a Repeater Unit.
• A DRS1-T Terminating Resistor must be connected at the end of the
network.
Terminating
Resistor (121
Ω
)
Communications
Communications
Slave Unit
Slave Unit
Slave Unit
Communications
power supply, 24 VDC
Communications
power supply, 24 VDC
Communications
power supply, 24 VDC
BDL
BDH
BS
−
BS+
BDL
BDH
BS
−
BS+
BS
−
BS+
BS
−
BS+
BDL
BDH
BDL
BDH
Master Board or
Repeater Unit
Open Type Connector
Communications signal lines (2)
Relay terminal block
Commu-
nications
Open Type Connector
Содержание 3G8F7-CRM21
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Страница 30: ...10 Specifications Section 1 7 1 7 3 Dimensions 3G8F7 CRM21 PCI unit mm 3G8F8 CRM21 CompactPCI unit mm...
Страница 46: ...26 Connecting the Communications Power Supply Cables Section 2 4...
Страница 74: ...54 Board Hardware Error Notification Section 4 8...
Страница 173: ...153 APPENDIX D Sample Program D 1 Sample Program 154...
Страница 230: ...210 Wiring for Power Supply Section E 5...
Страница 234: ...214 Index...
Страница 236: ...216 Revision History...
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