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5.7.3.5
SELECTING THE BINARY INPUT CURRENT
The input threshold for detecting a logic 1 can be set at either 8uA or 20mA using a jumper on the
module board. When jumper J4 is shorted, the threshold current level is 20 mA. When jumper J4 is
not shorted, the threshold current level is 8μA. A threshold current value of 20mA has a higher
resistance to noise on the input but also dissipates more power.
Fig. 32: CNT I/O
board
Jumper
J4
31