Advantech PCI-1240, User Manual

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PCI-1240/PCI-1240U User Manual 20
3.3 Output Pulse Definition (nP+P, nP+N, nP-P, nP-N)
The output pulse command of PCI-1240/PCI-1240U is from MCX314/
MCX314AS chip. The pulse command has two types. One is in Up/Down
mode and another is in Pulse/Direction mode. While nP+P is differential
from nP+N and
nP-P is differential from nP-N. After system reset, the nP+P and nP-P is
low level, and this invert output (nP+N, nP-N) is high level, and the
de-fault setting of pulse output mode is Up/Down. User can change the
output mode into Pulse/Direction mode by writing specified command
system register.
Figure 3.3: Output Signal Loop for Drive Pulses
From the circuit shown above (Figure 3-3), the default output mode is dif-
ferential output. For single ended output use, user can change jumpers
JP1~8 to +5V. Note that you should prevent from the noise interference
when using jumpers JP1~8 to output in5V to external device.
Table 3.4: Jumper table of JP1~8
Jumper JP1 JP2 JP3 JP4 JP5 JP6 JP7 JP8
Output Sig-
nal
XP+P XP-P YP+P YP-P ZP+P ZP-P UP+P UP-P
IC Output
(Line Driver
Output)
Pin2 and Pin 3 short (Default)
+5V
Output
Pin1 and Pin 2 shor