Delta DVP-SS2

2. Programming Concepts
2-5
2.2 SS2 Memory Map
Specifications
Control Method
Stored program, cyclic scan system
I/O Processing Method
Batch processing method (when END instruction is
executed)
Execution Speed
LD instructions – 0.54µs, MOV instructions – 3.4µs
Program language
Instruction List + Ladder + SFC
Program Capacity
7920 steps
Bit
Contacts
X External inputs
X0~X377, octal number system, 256
points max.
Total
480+14
I/O(*4)
Y External outputs
Y0~Y377, octal number system, 256
points max.
M
Auxiliary
relay
General
M0~M511, 512 points, (*1)
M768~M999, 232 points, (*1)
M2000~M2047, 48 points, (*1)
Total
4096 points
Latched
M512~M767, 256 points, (*2)
M2048~M4095, 2048 points, (*2)
Special
M1000~M1999, 1000 points, some
are latched
T Timer
100ms
(M1028=ON,
T64~T126:
10ms)
T0~T126, 127 points, (*1)
T128~T183, 56 points, (*1)
Total
256 points
T184~T199 for Subroutines, 16
points, (*1)
T250~T255(accumulative), 6 points
(*1)
10ms
(M1038=ON,
T200~T245: 1ms)
T200~T239, 40 points, (*1)
T240~T245(accumulative),
6 points, (*1)
1ms
T127, 1 points, (*1)
T246~T249(accumulative), 4 points,
(*1)
C Counter
16-bit count up
C0~C111, 112 points, (*1)
C128~C199, 72 points, (*1)
Total
233 points
C112~C127, 16 points, (*2)
32-bit count
up/down
C200~C223, 24 points, (*1)
C224~C232, 9 points, (*2)
32bit
high-
speed
count
up/down
Soft-
ware
C235~C242, 1 phase 1 input, 8
points, (*2)
Total
22 points
C233~C234, 2 phase 2 input, 2
points, (*2)
Hard-
ware
C243~C244, 1 phase 1 input, 2
points, (*2)
C245~C250, 1 phase 2 input, 6
points, (*2)
C251~C254 2 phase 2 input, 4
points, (*2)
S
Step
point
Initial step point
S0~S9, 10 points, (*2)
Total 1024
points
Zero point return
S10~S19, 10 points (use with IST
instruction), (*2)
Latched
S20~S127, 108 points, (*2)
General
S128~S911, 784 points, (*1)
Alarm
S912~S1023, 112 points, (*2)
Word
Register
T
Current value
T0~T255, 256 words
C Current value
C0~C199, 16-bit counter, 200 words
C200~C254, 32-bit counter, 55 words