Siemens SIMATIC S5-115U User Manual page 138

Error Diagnostics
Table 5-2. ISTACK Display on PG 605U (Continued)
Bit
7 6
Byte
17 2nd nesting level
18 3rd nesting level
19 Nesting depth (0 to 6)
20 1st nesting level
21 Start address of the data block (high)
22 Start address of the data block (low)
23 Block stack pointer (high)
24 Block stack pointer (low)
25 Step address counter (high)
26 Step address counter (low)
27 Statement register (high)
28 Statement register (low)
29 ACCUM 2 (high)
30 ACCUM 2 (low)
31 ACCUM 1 (high)
32 ACCUM 1 (low)
1 Absolute memory address of the next statement that still has not been scanned.
5-4
5 4 3
1
2 1 0
OR VKE FKT
OR VKE FKT
OR VKE FKT
EWA 4NEB 811 6130-02b
S5-115U Manual
Abso- System
lute data word
addr. (SD)
EBA4
SD 210
EBA5
EBA2
SD 209
EBA3
EBA0
SD 208
EBA1
EB9E
SD 207
EB9F
EB9C
SD 206
EB9D
EB9A
SD 205
EB9B
EB98
SD 204
EB99
EB96
SD 203
EB97