Omron CPM2C Operation Manual page 48

Comparison with the CPM1A and CPM2A
Item
Interrupt inputs Counter mode
(counter mode)
Counter upper limit
SR 244 to SR 247
Method(s) to read counter
PV
Method to change counter
PV
Interval timer One-shot mode
Scheduled interrupt mode
Item
Quick-response Setting the quick-response
inputs function
INT(89) (Mask)
INT(89) (Read mask)
INT(89) (Clear)
Minimum pulse width
High-speed Count mode
counter
Max. counter frequency
Counter PV range
Check when registering tar-
get value match table
Method used to reference the
target value match interrupt
table
Reading range-comparison
results
Reading status
Pulse synchronization
CPM2C
Incrementing counter Same as CPM2C.
Decrementing counter
2 kHz Same as CPM2C.
Contains counter PV. Same as CPM2C.
Read SR 244 to SR 247. Same as CPM2C.
Execute PRV(62).
Execute INI(61). Same as CPM2C.
Yes Same as CPM2C.
Yes Same as CPM2C.
CPM2C/CPM2A
PC Setup
Not supported (ignored)
Reads mask status.
Not supported (ignored)
50 µs min.
Differential-phase (up/down) mode
Pulse plus direction mode
Up/down pulse mode
Increment mode
5 kHz in differential-phase (up/down) mode
20 kHz in pulse plus direction mode, up/
down pulse mode, and increment mode
–8,388,608 to 8,388,607 in differential-
phase (up/down) mode, pulse plus direc-
tion mode, and up/down pulse mode
0 to 16,777,215 in increment mode
Same direction, same SV not possible
Comparison of all values in the table,
regardless of order of appearance in table
Check AR 1100 to AR 1107 or execute
PRV(62).
Check AR 1108 (comparison in progress),
check AR 1109 (high-speed counter PV
overflow/underflow), or execute PRV(62).
Supported.
Section 1-5
CPM2A CPM1A
Decrementing
counter
1 kHz
Contains counter
PV–1.
Read SR 244 to
SR 247.
(Counter PV – 1)
Not supported.
Same as CPM2C.
Same as CPM2C.
CPM1A
PC Setup and INT(89)
(Unmask interrupt input.)
Supported.
Reads result of mask set-
ting.
Supported.
200 µs min.
Differential-phase
(up/down) mode
Increment mode
2.5 kHz in
differential-phase
(up/down) mode,
5 kHz in increment mode
–32,768 to 32,767 in
differential-phase
(up/down) mode
0 to 65,535 in increment
mode
Same direction, same SV
possible
Comparison in order of
appearance in table
Check AR 1100 to
AR 1107.
---
Not supported.
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