Yaskawa MP940 - Manual (Page 122)

4.4 CNTR Function
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4.4 CNTR Function
This section explains the MP940 counter function (CNTR).
4.4.1 Overview
The MP940’s counter function supports one pulse input (PI). Pulses can be received with a
5-V differential interface.
The MP940 has a latch input signal, enabling counter values to be latched on the latch sig-
nal. It also has a coincidence detection signal output, so the CPU and external devices are
notified when an internally set value matches the counter’s current count.
Counted data is input in a regular cycle with each CPU scan (system, high-speed, or low-
speed).
BAT
RDY
RUN
ALM
BAT
PRT1
6
5
4
3
2
1
NO →
PRT2
RUN
INIT
TEST
FLASH
PP
COPY
PORT1
PORT2
POWER
+24V
GND
FG
LED
I/O
TX R
X
1
2
M
E
C
H
A
T
R
O
L
I
N
K
MP940
CPU
Pulse
input
processor
5-V differen-
tial interface
Latch input
Coincidence detection output
I/O
port