Advantech APAX-5013, Руководство пользователя

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63 APAX-5000 I/O Series User Manual
Chapter 3
D
igital Input
/Output
Modules
General

Dimensions (W x H x D): 30 x 139 x 100 mm

Weight: 165 g

Power Consumption: 2.5 W @ 24 VDC (typical)

Status Display: LED per channel
– On: Logic level “1”
– Off: Logic level “0”
APAX-5080 Counter Mode No Gate No Alarm
There are so many counter modes in APAX-5080 and below will use counter0 as an
example to explain every counter mode operation principle.
Below are the definitions of counter mode.

Pulse/DIR: Ch0_A provides the counting function, one pulse, one count, and
Ch0_B provides the clockwise and counter clockwise function.

Up/Down: CH0_A provides the counter up function, one pulse one up count,
and CH0_A provides the counter down function, one pulse one down count.

UP: CH0_A provides the counter up function, one pulse one up count.

A/B Phase 1X: counter mode A/B Phase x 1--If the signal “A” leads “B” by a ris-
ing or falling edge, then the number of steps will be added by one, and vice
versa.

A/B Phase 2X: counter mode A/B Phase x 2

A/B Phase 4X: counter mode A/B Phase x 4

With Reload: When the counter0 value is overflow, the value will be reset to the
initial value.

No Reload: If the counter0 value is overflow, the value will be 0. If the counter0
value is overflow, the value will be the max value.

Count Once: It means if the counter0 is overflow, it won’t count again.

Count Repetitively: when counter value is overflow or underflow, it will reset to
the default value and continuous to count.

Frequency: CH0_A provides the frequency function from 0.1Hz~1MHz.
Pulse/DIR, No Reload, Count Once
Figure 3.3 shows pulse/direction mode, Ch0_A provides the counting function, one
pulse, one count. Ch0_B provides the clockwise and counter clockwise function.
When the counter0 is enabled, the couner0 starts to count. If the counter value is
overflow or underflow, it will show the minimum (0x00) or maximum (0xFFFFFFFF)
value and not count continuously.
0x33 0x34 0x35
Up Down
0x34 0x33 0x32
………
0x00 0xFFFFFFFF
Ch0_A
Ch0_B
Counter0
Value
Counter0
Enable
Counter0
Underflow