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7.10.3
Indicators
The RD316 has three on board status indication LEDs. The functions of these are as
follows:
Upper LED (green) indicates the RD316 module is currently transmitting or receiving
data.
Center LED (yellow) indicates the RD316 module is writing data to the subrack.
Lower LED (green) indicates the RD316 module is reading data from the subrack.
7.10.4
DIP Switches
Both the operating mode of the RD316 and the transmission format are selectable via
the on-board DIP switches. Mode switch settings and the appropriate format switch
settings for the supported interface/protocol modes are detailed on the succeeding
pages. The general function of the format switches are as follows:
Position
SW1-1
SW1-2
SW1-3 & 4
Rev. C
NOTE: All three LEDs will flash continuously if an invalid
mode switch setting is selected.
Function when ON
Connect data output to isolation transformer
Connect terminating resistor across RX pair
Connect TX and RX pairs for two wire half duplex operation
7.10-2
HMXMU001018
10/06
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