5
Component Name and Function
Section 1-3
1-3-2
3G8F8-CRM21 (for CompactPCI Bus)
Communications power supply connector
This is used to connect a 24-VDC power supply when either
round cable II or Flat Cable I or II is used.
The communications power is supplied through this connector
and the round cable II, Flat Cable I or Flat Cable II to the Slave
Units and Repeater Units on the trunk line.
Note : Do not connect anything to this connector when a round
cable I is used.
LED Indicators (MS and NS)
Board ID Switch
They indicate the Module Status (MS)
and Network Status (NS) that are
defined in the CompoNet protocol.
This is used to set the board ID. It is set as a
decimal number. The number must not
overlap the IDs for other CompoNet Master
Boards mounted on the same personal
computer.
Communications connector
This is used to connect to the communications cable.
The terminals BS+ and BS- are for communications power supply. The terminals BDH and BDL are for
communications data.
The BS+ and BS- can be used only for round cable II or Flat Cable I or II. They output the
communications power from the power supply connected to the communications power supply
connector.
Note : By attaching an Open Type Connector for Unit connection, the communications connector can be
converted to a terminal-block type.
Summary of Contents for 3G8F7-CRM21
Page 4: ...iv...
Page 10: ...x TABLE OF CONTENTS...
Page 46: ...26 Connecting the Communications Power Supply Cables Section 2 4...
Page 74: ...54 Board Hardware Error Notification Section 4 8...
Page 173: ...153 APPENDIX D Sample Program D 1 Sample Program 154...
Page 230: ...210 Wiring for Power Supply Section E 5...
Page 234: ...214 Index...
Page 236: ...216 Revision History...
Page 237: ......