Contacts – Rockwell Automation 1760-xxxx Pico Controller User Manual User Manual
Page 64
Publication 1760-UM001D-EN-P - September 2005
4-4 Draw a Circuit Diagram with Pico
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.
Pico works with different contacts, which can be used in any order in
the contact fields of the circuit diagram.
Usable Contacts
Contact
Pico Representation
Make contact; Open when off
I, Q, M, N, A, Ö, Y, C, T, O, P, :, D, S, R, Z
Break contact; Closed when off
I, Q, M, N, A, Ö,Y, C, T, O, P, D, S, R, Z
Contact Type
Make
Contact
Break
Contact
1760-L12xxx
1760-L18xxx
1760-L20xxx
Controller Inputs
I
I
I1 to I8
I1 to I12
0 signal
I13
I13
Expansion Status
–
I14
(3)
Short-circuit/overload
I16
I15 to I16
Soft Inputs - Keypad
P
P
P1 to P4
P1 to P4
Controller Outputs
Q
Q
Q1 to Q4
Q1 to Q8
Internal Marker Bits
M
M
M1 to M16
M1 to M16
Internal Marker Bits
N
N
N1 to N16
N1 to N16
Counters
C
C
C1 to C16
C1 to C16
Timers
T
T
T1 to T16
T1 to T16
Real Time Clock
(1)
Analog Setpoint
Compare
(2)
A
A
A1 to A16
A1 to A16
Text Display
D
D
D1 to D16
D1 to D16
Expansion Outputs or
Internal Marker Bits
S
S
S1 to S8
S1 to S8
Jump to Label
:
–
:1 to :8
:1 to :8
Expansion Inputs
R
R
–
R1 to R12
Expansion Overload
Detection
R
R
–
R15 and R16
(3)
1 to
8
1 to
8