Siemens SIMATIC S7-200 - Timer Numbers and Resolutions

SIMATIC Instructions
9-16
S7-200 Programmable Controller System Manual
A5E00066097-02
TON, TONR, and TOF timers are available in three resolutions. The resolution is
determined by the timer number as shown in Table 9-1. Each count of the current
value is a multiple of the time base. For example, a count of 50 on a 10-ms timer
represents 500 ms.
Table 9-1 Timer Numbers and Resolutions
Timer Type
Resolution in
milliseconds (ms)
Maximum Value
in seconds (s)
Timer Number
TONR
( t ti )
1 ms 32.767 s (0.546 min.) T0, T64
(retentive)
10 ms 327.67 s (0.546 min.) T1 to T4, T65 to T68
100 ms 3276.7 s (0.546 min.) T5 to T31, T69 to T95
TON, TOF
( t ti )
1 ms 32.767 s (0.546 min.) T32, T96
(non-retentive)
10 ms 327.67 s (0.546 min.) T33 to T36, T97 to T100
100 ms 3276.7 s (0.546 min.) T37 to T63, T101 to T255
Note
You cannot share the same timer numbers for TOF and TON. For example, you
cannot have both a TON T32 and a TOF T32.