
3. External Connection
36
SMC-4DF-PCI, SMC-8DF-PCI
Connecting Output Signals
Pulse output circuit (CW, CCW)
The pulse output circuit on this product, which is in the form of a differential line driver (AM26LS31
equivalent) as shown in the following figure, can be connected with differential input, opto-coupler, and
TTL level input.
Connection with the differential input
Figure 3.6. Pulse output circuit (Connection with the differential input)
CAUTION
- Please use the twisted-pair cable that does the shield processing as a noise measures when
connecting it with the differential input.
Connection with the opto-coupler input (When the driver unit guarantees the connection with the
differential output)
CW
CW+
CW-
CCW
CCW+
CCW-
Board
Driver Unit
AM26LS31 or equivalence to it
CW
CCW
Figure 3.7. Pulse output circuit (connection with the opto-coupler input)
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