AutomationDirect DL205 - Page 247

DL205 User Manual, 4th Edition, Rev. D
5-23
Chapter 5: Standard RLL Instructions
1
2
3
4
5
6
7
8
9
10
11
12
13
14
A
B
C
D
And Positive Differential (ANDPD)
The And Positive Differential instruction logically ANDs
a normally open contact in series with another contact
in a rung. The status of the contact will be open until
the associated image register point makes an off-to-on
transition, closing it for one CPU scan. Thereafter, it
remains open until another off-to-on transition.
And Negative Differential (ANDND)
The And Negative Differential instruction logically
ANDs a normally open contact in series with another
contact 5-23in a rung. The status of the contact will
be open until the associated image register point makes
an on-to-off transition, closing it for one CPU scan.
Thereafter, it remains open until another on-to-off transition.
In the following example, Y5 will energize for one CPU scan whenever X1 is on and X2
transitions from off to on.
In the following example, Y5 will energize for one CPU scan whenever X1 is on and X2
transitions from on to off.




230
240
250-1
260




230
240
250-1
260
Aaaa
Aaaa
Y5
OUT
X1
DirectSOFT
X2
STR
$
CV
P
ENT
OUT
GX
3
D
SHFT
1
B
ENT
Handheld Programmer Keystrokes
5
F
AND
V
2
C
ENT
X1
Y5
OUT
DirectSOFT
X2
STR
$
TMR
N
ENT
OUT
GX
3
D
SHFT
1
B
ENT
Handheld Programmer Keystrokes
5
F
AND
V
2
C
ENT
Operand Data Type DL250-1 Range DL260 Range
A aaa aaa
Inputs X 0–777 0–1777
Outputs Y 0–777 0–1777
Control Relays C 0–1777 0–3777
Stage S 0–1777 0–1777
Timer T 0–377 0–377
Counter CT 0–177 0–377
Global GX – 0–3777
Global GY – 0–3777
DS Implied
HPP Used