AB Soft PicoTM Controller 1760 Manuel D’Utilisation

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Publication 1760-GR001C-EN-P - April 2005
Drawing a Circuit with Pico        2-5
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.
Pico works with different contacts, which can be used in any order in 
the contact fields of the circuit diagram.
Contact
Pico Representation
Make contact; Open when off
I, Q, M, A, C, T, P, D, S, :, R
Break contact; Closed when off
I, Q, M, A, C, T, P, D, S, R
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
1 to 
8
1 to 
8