Specifications

IEC 1131-3 Instructions
10-11
S7-200 Programmable Controller System Manual
C79000-G7076-C233-01
10.3 IEC Timer Instructions
Table 10-2 gives page references for the non-standard IEC Timer instructions.
Table 10-2 Non-Standard IEC Timer Instructions
Description
Page
Retentive On-Delay Timer Instruction 9-15
On-Delay Timer
The On-Delay Timer function block times up to the
preset value when the enabling input (IN) becomes true.
When the elapsed time (ET) is greater than or equal to
the Preset Time (PT), the timer output bit (Q) turns on.
The output bit is reset when the enabling input goes
false. When the preset time (PT) is reached, timing stops
and the timer is disabled.
Inputs/Outputs Operands Data Types
IN (LAD) Power Flow BOOL
IN (FBD) I, Q, M, SM, T, C, V, S, L, Power Flow BOOL
PT (LAD & FBD) VW, IW, QW, MW, SMW, LW, SW, AIW, AC, Constant, *VD, *AC, *LD INT
Q (LAD & FBD) I, Q, M, SM, V, S, L BOOL
ET (LAD & FBD) VW, IW, QW, MW, SMW, LW, SW, AQW, AC, *VD, *AC, *LD INT
xxx refer to Table 10-3 TON
L
A
D
TON
IN
xxx
F
B
D
PT Q
ET
222 224
333
221