Timer and counter blocks

Each of these blocks uses a TIMER or COUNTER tag, like its ladder instruction.

Blocks

en
pre
eno
PRE
ACC
EN
TT
DN
Timer on delay TON
Times while en is on. DN turns on when ACC reaches PRE. Use it to delay a start.
Same as TON in ladder
en
pre
eno
PRE
ACC
EN
TT
DN
Timer off delay TOF
Keeps DN on for PRE after en turns off. Use it to run a fan on after a motor stops.
Same as TOF in ladder
en
pre
eno
PRE
ACC
EN
TT
DN
Retentive timer RTO
Like TON, but keeps ACC when en turns off. Use it for total run time, and clear it with RES.
Same as RTO in ladder
en
pre
eno
PRE
ACC
CU
CD
DN
OV
UN
Count up CTU
Adds 1 each time en turns on. DN is on at PRE. Use it to count parts.
Same as CTU in ladder
en
pre
eno
PRE
ACC
CU
CD
DN
OV
UN
Count down CTD
Takes 1 away each time en turns on. Use it for what is left.
Same as CTD in ladder
en
eno
Reset RES
Sets the timer or counter back to 0 while en is on.
Same as RES in ladder