Maretron SIM100 - Manual (Page 12)

SIM100 User's Manual
Page 8 Revision 1.0
A switch indicator
always reads “Closed” Ensure that there is not a short circuit in the wiring for the switch.
Measure the resistance between the “A” and “B” terminals for the
appropriate indicator. If the switch is open, the resistance should
either be an open-circuit, if the indicator is configured as “No End
of Line Resistor”, or should measure 8 KΩ if the indicator is
configured as “End of Line Resistor”. If the switch is closed, the
resistance should be close to 0 Ω.
A switch indicator
always reads “Error” Ensure that the configuration of the indicator matches the circuit
connected to it. Measure the resistance between the “A” and “B”
terminals for the appropriate indicator. If the switch is open, the
resistance should either be an open-circuit, if the indicator is
configured as “No End of Line Resistor”, or should measure 8 KΩ if
the indicator is configured as “End of Line Resistor”. If the switch
is closed, the resistance should be close to 0 Ω.
A switch indicator
always reads “Open” Ensure that the switch is connected to the indicator terminals that
that there are no open circuits between the SIM100 and the switch.
Measure the resistance between the “A” and “B” terminals for the
appropriate indicator. If the switch is open, the resistance should
either be an open-circuit, if the indicator is configured as “No End
of Line Resistor”, or should measure 8 KΩ if the indicator is
configured as “End of Line Resistor”. If the switch is closed, the
resistance should be close to 0 Ω.