Data Sheet

OB
● Description
see instruction list
● Size, max.
64kbyte
● Number of free cycle OBs
1; OB 1
● Number of time alarm OBs
1; OB 10
● Number of delay alarm OBs
2; OB 20, 21
● Number of cyclic interrupt OBs
4; OB 32, 33, 34, 35
● Number of process alarm OBs
1; OB 40
● Number of startup OBs
1; OB 100
● Number of asynchronous error OBs
4; OB 80, 82, 85, 87
● Number of synchronous error OBs
2; OB 121, 122
Nesting depth
● per priority class
16
● additional within an error OB
4
Counters, timers and their retentivity
S7 counter
● Number
256
Retentivity
— adjustable
Yes
— lower limit
0
— upper limit
255
— preset
Z 0 to Z 7
Counting range
— lower limit
0
— upper limit
999
IEC counter
● present
Yes
● Type
SFB
● Number
Unlimited (limited only by RAM capacity)
S7 times
● Number
256
Retentivity
— adjustable
Yes
— lower limit
0
— upper limit
255
— preset
No retentivity
Time range
— lower limit
10ms
— upper limit
9990s
IEC timer
● present
Yes
6AG1312-5BF04-2AY0 Subject to change without notice
Page 3/
12
09/14/2019 © Copyright Siemens