S300 Expansion Enclosures CK721-A Installation and Operation
3-44 24-10349-8 Rev. B
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© 2012 Johnson Controls, Inc.
Table 3-20: S300-IO8 Components
Component Description
J1A Output Relay 1 Connector
J1B Output Relay 2 Connector
J1C Output Relay 3 Connector
J1D Output Relay 4 Connector
J2A Output Relay 5 Connector
J2B Output Relay 6 Connector
J2C Output Relay 7 Connector
J2D Output Relay 8 Connector
J3 RS485 Input
J4 RS485 Output
J5A Alarm Inputs 1 and 2
J5B Alarm Inputs 3 and 4
J5C Alarm Inputs 5 and 6
J5D Alarm Inputs 7 and 8
SW1 Address Settings
System LEDs Indicate when data is transmitted or received and the presence
of 5 and 12 VDC, as labeled in
Figure 3-28.
U1 S300-IO8 Firmware