Pico Circuit Diagram Elements - Allen-Bradley PicoTM Controller 1760 Product Manual

Pico Circuit Diagram
Elements
Contacts
Contacts are used to modify the flow of current in the circuit diagram.
Contacts in the circuit diagram are either make or break contacts.
Make contacts are open when off (de-energized) and closed when on.
Break contacts are closed when off and open when on.
Contact
Make contact; Open when off
Break contact; Closed when off
Pico works with different contacts, which can be used in any order in
the contact fields of the circuit diagram.
Contact Type Make
Contact
Controller Inputs I
0 signal
Expansion Status
Short-circuit/overload
Soft Inputs - Keypad P
Controller Outputs Q
Internal Marker Bits M
Internal Marker Bits N
Counters C
Timers T
(1)
Real Time Clock
Analog Setpoint A
(2)
Compare
Text Display D
Expansion Outputs or S
Internal Marker Bits
Jump to Label :
Expansion Inputs R
Expansion Overload R
Detection
Drawing a Circuit with Pico
Pico Representation
I, Q, M, A, C, T, P, D, S, :, R
I, Q, M, A, C, T, P, D, S, R
Break 1760-L12xxx
Contact
I I1 to I8
I13
–
I16
P P1 to P4
Q Q1 to Q4
M M1 to M16
N N1 to N16
C C1 to C16
T T1 to T16
1 to 8
A A1 to A16
D D1 to D16
S S1 to S8
– :1 to :8
R –
R –
Publication 1760-GR001C-EN-P - April 2005
2-5
1760-L18xxx
1760-L20xxx
I1 to I12
I13
(3)
I14
I15 to I16
P1 to P4
Q1 to Q8
M1 to M16
N1 to N16
C1 to C16
T1 to T16
1 to 8
A1 to A16
D1 to D16
S1 to S8
:1 to :8
R1 to R12
(3)
R15 and R16