Assignment of I/O channel and
relay numbers
Timer/counter numbers
No. of
TIM/CNTOO to 47
Timer/counter
Input relays
Output relays
Internal auxiliary relays
The CPU has 136 internal auxiliary relays (No. 1000 to 1807) that
constitute channels 10 to 18.
Holding relays (retentive relays)
Timers/counters