Delta DVP-10PM, Applications Manual

Page: 52 / 561

3
Functions of Devices in DVP-PM
DVP-PM Application Manual
3-7
The handling process of DVP-PM program:
X0
Y0
Y0
M0
X input
Update input signal
Program processing
Update output
Input terminal
Input signal memory
Read into memory
Read X0 status from memory
Write in
Y0 status
Read Y0 status from memory
Write in
M0 status
D
e
vi
ce
m
e
m
o
ry
Output
Output latched memory
Output terminal
Y output
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Update input signal
1. Before the execution of the program, DVP-PM reads
the ON/OFF status of the external input signals into the
input signal memory.
2. The ON/OFF status of input signal changed during
program execution will not be read into input signal
memory. The new ON/OFF status will be read in the
next scan.
3. There will be approximately a 10ms delay from external
ON/OFF switching to the internal ON/OFF of contacts.
The delay time may be affected by program scan time.
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Program processing
After DVP-PM reads the ON/OFF status stored in the
input signal memory, it executes every instruction from
address 0 and stores the status of devices into the
device memory.
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Update output
1. When the execution reaches M102 instruction, DVP-PM
sends the ON/OFF status of Y in the device memory to
the output latched memory. The output latched memory
is the coil of the output relay.
2. There will be a 10ms delay from the ON/OFF switching
of output relay to the actual ON/OFF of physical output
contacts.
3.
For transistor output MPU, there will be a 10 ~ 20us
delay from the ON/OFF switching to the actual ON/OFF
of physical output contacts.
3.4 Numbering and Functions of Auxiliary Relays [M]
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No. of auxiliary relays (in decimal):
General purpose
M0 ~ M499, 500 points, can be modified as latched area by setting up
parameters.
Latched
M500 ~ M999, M3000 ~ M4095, 1,596 points, can be modified as
non-latched area by setting up parameters.
Auxiliary relay
M
Special purpose M1000 ~ M2999, 2,000 points, some are latched.
Total 4,096
points
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Functions of auxiliary relays:
Both auxiliary relay M and output relay Y have output coils and NO, NC contacts, and there is no limitation on the
times of using the contacts. You can use auxiliary relay M in the program but it cannot directly drive the external load.
There are three types of auxiliary relays.