Technical Instructions LME Series
Document No. LME-1000
Section 8 Page 2 SCC Inc.
Connection to the BMS
The connection from the BMS to the OCI417.10 is via terminal block. The physical medium is
RS-485. Multiple RS-485 nodes may be connected in a daisy-chain. For long runs (typically
greater than 1,000 feet) or noisy environments, termination may be required on the end node.
Terminal designations:
Label Function
A RS-485 Data (+)
B RS-485 Data (-)
G RS-485 Common Ground
Status LED
The status LED annunciates the status of the OCI417.10 and the connection to the LME7…
Color Status
Green Flashing No Connection to LME7…
Green / Red Alternating Communicating with LME7…
Red Flashing Internal Error OCI417.10
Tx/Rx LED
The LED will flash red to indicate incoming communication on the RS-485 connection. The LED
will flash green to indicate outgoing communication. With normal communication, the LED will
rapidly alternate between green and red. NOTE: If the poll rate is fast the flashes may be very
brief and hard to notice.
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