42
Communications Cable Wiring Examples
Section 2-4
2-4
Communications Cable Wiring Examples
The following wiring is required in a CompoNet Network.
• Two communications signal lines (communications data): BDH (communi-
cations data high) and BDL (communications data low)
• Two communications power supply lines (power for communications and
internal Slave Unit circuits): BS+ (communications power supply plus
side) and BS
−
(communications power supply minus side)
The wiring method depends on the type of cable that is used.
2-4-1
Round Cable I
• Connect the two communications signal lines in parallel between the Mas-
ter Unit or Repeater Unit and multiple Slave Units.
• Use Open Type Connectors (DCN4-TB4, for connecting Units) to connect
Communications Cables to Master Units, Repeater Units, and Slave
Units.
• To supply the communications power (24 VDC), connect the two commu-
nications power supply lines to each Slave Unit separately from the Com-
munications Cables.
• Power is not supplied to the Master Unit or Repeater Units.
• A Terminating Resistor (DRS1-T) must be connected at the end of the
network.
Slave Units can also be connected in parallel using multidrop connections.
BDL
BDH
BDL
BDH
BDL
BDH
BS
−
BS+
BS
−
BS+
BS
−
BS+
Terminating Resistor
(121
Ω
)
Two communications
signal lines
Communications
Communications
Slave Unit
Slave Unit
Slave Unit
24-VDC
communications
power supply
24-VDC
communications
power supply
24-VDC
communications
power supply
Master Unit or
Repeater Unit
Open Connector
Open Connector
Relay terminal block
Commu-
nications
BS+
BS
−
BDL
BDH
Summary of Contents for CRT1 - 10-2009
Page 1: ...Cat No W457 E1 07 CompoNet Slave Units and Repeater Unit CRT1 Series OPERATION MANUAL...
Page 2: ......
Page 3: ...CRT1 Series CompoNet Slave Units and Repeater Unit Operation Manual Revised October 2009...
Page 4: ...iv...
Page 6: ...vi...
Page 10: ...x...
Page 16: ...xvi...
Page 24: ...xxiv Conformance to EC Directives 6...
Page 386: ...362 Units with Connectors Section 6 7...
Page 414: ...390 Temperature Input Units Section 7 5...
Page 430: ...406 Expansion Unit Specifications Section 8 2...
Page 494: ...470 Bit Slave Units with Compact Connectors Section 9 5...
Page 501: ...477 Repeater Unit Section 10 2 Dimensions 42 3 50 3 1 27 5 95 mm...
Page 502: ...478 Repeater Unit Section 10 2...
Page 508: ...484 CX Integrator Section 11 1...
Page 509: ...485 CX Integrator Section 11 1...
Page 602: ...578 Temperature Input Unit Functions Section 11 6...
Page 614: ...590 Device Maintenance Section 12 3...
Page 664: ...640 I O Power Supply Current Appendix E...
Page 672: ...648 Index...
Page 674: ...650 Revision History...