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Getting Started Teledyne API – T101 Operation Manual
36
3.3.3. CONNECTING THE STATUS OUTPUTS
The analyzer’s status outputs are accessed through a 12-pin connector on the analyzer’s
rear panel labeled STATUS. They are used to interface with a device that accepts closed-
contact digital inputs, such as programmable logic controllers (PLC’s).
Connect to Internal
Ground of Monitoring
STATUS
1 2 3 4 5 6 7 8 D
+
SYSTEM O
K
HIGH RANGE
CONC VALID
ZERO CAL
SPAN CAL
DIAGNOSTIC MODE
Figure 3-9. Status Output Connector
NOTE
Most PLCs have internal provisions for limiting the current the input will draw. When connecting to
a unit that does not have this feature, external resistors must be used to limit the current through
the individual transistor outputs to ≤50mA (120 Ω for 5V supply).
07266B DCN6485