Omron SYSMAC CQM1H Series, Руководство по программированию

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Pulse I/O Board Section 2-2
Port Mode Setting and Applicable Instructions
In Simple Positioning Mode, CTBL(63) (REGISTER COMPARISON TABLE)
cannot be used, and high-speed counter interrupts cannot be performed. Only
PV reads can be performed.
Processing Input Signals and Input Modes
The Input Modes that can be used for high-speed counters 1 and 2 are deter-
mined by the signal types.
1,2,3... 1. Differential Phase Mode (Counting Rate = 25 kHz):
Two phase-difference 4x signals (phase A and phase B) and a phase-Z
signal are used for inputs. The count is incremented or decremented ac-
cording to differences in the two phase signals.
2. Pulse/Direction Mode (Counting Rate = 50 kHz):
Phase A is the direction signal and phase B is the count pulse. The counter
increments when the phase-A signal is OFF and decrements when it is
ON.
3. Up/Down Mode (Counting Rate = 50 kHz):
Phase A is the decrementing signal and phase B is the incrementing sig-
nal. The counter decrements when an A-phase pulse is detected and in-
crements when a phase-B pulse is detected.
Numeric Ranges
The range of values counted by high-speed counters 1 and 2 are determined
by the following two modes.
1,2,3... 1. Ring Mode
In Ring Mode, the maximum value of the counting range can be set with
CTBL(63). The counter will go from the maximum count value to 0 when
incrementing, and from 0 to the maximum count value when decrementing;
there are no negative values. The maximum count value + 1 (i.e., the ring
value) is entered as the setting. Settings can range from 1 to 65,000, mak-
ing the counting range 0 to 64,999.
2. Linear Mode
The counting range in Linear Mode is fixed at –8,388,608 to 8,388,607. If
Instruction CTBL(63) INI(61) PRV(62)
Function Comparison table
registration
Comparison start PV change
Comparison start/
stop PV read
Comparison status
read
Range comparison
result read
High-speed
Counter Mode Enabled Enabled Enabled
Simple Positioning
Mode Disabled Enabled (PV
change only) Enabled
1 2 3 4 5 6 7 8 7 6 5 4 3 2
Encoder
input A
(Phase A)
Encoder
input B
(Phase B)
Differential Phase Mode
Count
Incremented Decremented
1 2
Encoder
input A
(Direction)
Encoder
input B
(Pulse)
Pulse/Direction Mode
Count
Incremented Decremented
Encoder
input A
(Down)
Encoder
input B
(Up)
Up/Down Mode
Count 3 2 1 1 2
Incremented Decremented
3 2 1