Rockwell Automation 1760-xxxx Pico Controller User Manual - Manual (Page 180)

Publication 1760-UM001D-EN-P - September 2005
9-2 Use of Expansion Modules
Outputs
Expansion module outputs are processed as relay coils or contacts in
the same way as they are on the Pico controller. The expansion
output relays are numbered S1 to S8.
Expansion module 1760-IA12XOW6I provides 6 relay outputs. The
other outputs, S7 and S8, can be used as markers.
Expansion module 1760-IB12XOB8 provides 8 transistor outputs. See
Monitor for Short Circuit or Overload on page 9-4 for information on
output faults.
Operation How the Expansion Module is Recognized
When at least one R contact or S contact/coil is used in the circuit
diagram, the Pico controller assumes that an expansion module is
connected.
Data Transfer Behavior
The input and output data of the expansion module is transferred
serially in both directions. Take into account the modified reaction
times of the inputs and outputs when using expansion modules.
Input and Output Reaction Times of Expansion Modules
TIP
The debounce setting has no effect on expansion
modules.
Transfer Times for Input and Output Signals
Input or Output Reaction Time
R1 to R12 30 ms + one cycle
S1 to S6 (or S8) 15 ms + one cycle time