Omron CJ2M-CPU Series - Comparison to CJ1 M Built-In I;O Functions

A-7
Appendices
CJ2M CPU Unit Pulse I/O Module User’s Manual
A-3 Comparison to CJ1M Built-in I/O Functions
App
A-3 Comparison to CJ1M Built-in I/O
Functions
Item
Specification/performance
CJ2M with Pulse I/O Module CJ1M built-in I/O
Normal inputs Number of inputs 20 inputs (10 × 2 Pulse I/O Modules) 10 inputs
Input response time ON response time: 8 ms max.
OFF response time: 8 ms max.
ON response time: 8 ms max.
OFF response time: 8 ms max.
Differ-
ences in
operation
Update timing for PLC
Setup
Update timing for input constants:
When power is turned ON
Update timing for input constants:
When operation is started
Normal outputs Number of outputs 12 outputs (6 × 2 Pulse I/O Modules) 6 outputs
Output response time ON response time: 0.1 ms max.
OFF response time: 0.1 ms max.
ON response time: 0.1 ms max.
OFF response time: 0.1 ms max.
Maximum switching
capacity
4.75 to 26.4 VDC
0.3 A/output; 1.8 A/Unit
4.75 to 26.4 VDC
0.3 A/output; 1.8 A/Unit
Output type Sinking (CJ2M-MD211)
Sourcing (CJ2M-MD212)
Sinking
Quick-response
inputs
Number of inputs 8 inputs (4 × 2 Pulse I/O Modules) 4 inputs
Minimum pulse width 30 µs 30 µs
Interrupt Inputs Number of inputs 8 inputs (4 × 2 Pulse I/O Modules) 4 inputs
Input response time ON response time: 30 µs max.
OFF response time: 150 µs max.
ON response time: 30 µs max.
OFF response time: 150 µs max.
Interrupt modes Direct Mode and Counter Mode Direct Mode and Counter Mode
Software latching for
PVs of high-speed
counters and pulse
outputs when an inter-
rupt occurs
Supported. Not supported.
Differ-
ences in
operation
Update method for
interrupt counter SV
(Counter Mode)
Updating interrupt counter SV in Auxil-
iary Area and then executing
MSKS(690) again to enable interrupts
Updating interrupt counter SV in Auxil-
iary Area
Update method for
interrupt counter PV
(Counter Mode)
INI(880) instruction • INI(880) instruction
• Updating interrupt counter PV in Aux-
iliary Area
Update timing for
interrupt counter PV
(Counter Mode)
• Every cycle
• When count completion interrupt
occurs
• When PRV(881) instruction is exe-
cuted
• Once per count
• When PRV(881) instruction is exe-
cuted
Operation of interrupt
counters when inter-
rupts are disabled with
DI(693)
Counter operation continued, but inter-
rupt will not occur at count completion
Counter operation not continued.