Omron 3G8F7-CRM21, User Manual

Page: 24 / 238

4
Component Name and Function Section 1-3
1-3 Component Name and Function
1-3-1 3G8F7-CRM21 (for PCI Bus)
LED Indicators (MS and NS)
Board ID Switch
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.
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.