Specifications

DL05 Micro PLC User Manual, 6th Edition, Rev. C
E–5
Appendix E: High-speed Input and Pulse Output Features
1
2
3
D
E
6
7
8
9
10
11
1
1
14
A
B
C
D
Configuring the HSIO Mode
If you have chosen a mode suited to the high-speed I/O needs of your application, we’re ready
to proceed to configure the PLC to operate accordingly. In the block diagram below, notice
the V-memory detail in the expanded CPU block. V-memory location V7633 determines the
functional mode of the high-speed I/O circuit. This is the most important V-memory
configuration value for HSIO functions!
The contents of V7633 is a 16-bit word, to be entered in binary–coded decimal. The figure
below defines what each 4-bit BCD digit of the word represents.
Bits 0 – 7 define the mode number 10, 20.. 60 previously referenced in this chapter. The
example data “2050” shown selects Mode 50 – Pulse Catch (BCD = 50). The DL05 PLC
ignores bits 8 - 12, 14 and 15 in V7633 (see System V-memory Map on page E-26).
Configuring Inputs X0 – X2
In addition to configuring V7633 for the HSIO mode, you’ll need to program the next three
locations in certain modes according to the desired function of
input points X0 – X2. Other memory locations may require
configuring, depending on the HSIO mode (see the
corresponding section for particular HSIO modes).
Output Circuit
Input Circuit
CPU
PLC
DL05
High-Speed
I/O Circuit
X0 - X2
Y0 - Y1
X3 -X7
Y2 - Y5
V-Memory
V7633
xxxx
Mode Select
I/O Data
V-Memory
V7633 xxxxMode
V7634 xxxxX0
V7635 xxxxX1
V7636 xxxxX2
014 13 12
Memory Location V7633
11 10 123456789Bits
00 0010100
HSIO Mode Setup (BCD)
0000
10 = High-Speed Counting Mode
20 = Quadrature Counting Mode
30 = Pulse Output Train
0
40 = High-Speed Interrupts
50 = Pulse Catching
60 = Discrete Filtered Inputs (default)
5
0
00
Bits 8 - 12, 14 and 15 are
not used in V7633.
15
0
Bit 13 is used to power-up
in RUN, only if Mode Switch
is in TERM position.