Siemens SIMATIC S7 - Page 299

IP244
C79000–B8576–C866–01
7–21
The following table shows the allocation of DB-A and DB-A’ (the shaded
areas are allocated by the standard block):
Data word Allocation Data word Allocation
DBW 0
DBW 128 ...
158
Message frame 3:
DBW 2
DBW 158
g
Data for closed-loo
p
controller 3
DBW 4 –, Direct functions
Data
for
closed loop
controller
3
DBW 6 ...
DBW 10
DBW 160 ...
DBW 190
Message frame 4:
Data for closed-loop controller 4
DBW 12 –, Software switch DBW 192 ...
222
Message frame 5:
DBW 14 Number of the DB-A’
DBW 222
g
Data for closed-loop controller 5
DBW 16 Number of the DB-C’
p
DBW 18 DBW 224 ...
254
Message frame 6:
DBW 20
DBW 254
g
Data for closed-loop controller 6
DBW 22
p
DBW 24 Number of the DB-B DBW 256 ...
286
Message frame 7:
DBW 26 Number of the DB-C
DBW 286
g
Data for closed-loop controller 7
DBW 28
p
DBW 30 –, Error byte (with PAFE = 1) DBW 288 ...
DBW 318
Message frame 8:
DBW 32 Message frame 0: Setpoint 1
DBW 318
Data for closed-loop controller 8
DBW 34 Tolerance 1
DBW 36 Setpoint 2 DBW 320 ...
350
Message frame 9:
DBW 38 Tolerance 2
DBW 350
g
Data for closed-loop controller 9
DBW 40 Control bytes 1 and 2
p
DBW 42 Manual manipulated variable; limit DBW 352 ...
382
Message frame 10:
DBW 44 Weighting factor
DBW 382
g
Data for closed-loop controller 10
DBW 46 Sampling time TA
p
DBW 48 Gain KR DBW 384 ...
414
Message frame 11:
DBW 50 Integral-action time TN
DBW 414
g
Data for closed-loop controller 11
DBW 52 Derivative action time TD
p
DBW 54 Automatic setting parameter DBW 416 ...
446
Message frame 12:
DBW 56 Upper zone limit, setpoint
DBW 446
g
Data for closed-loop controller 12
DBW 58 Lower zone limit
p
DBW 60
Heating/cooling ratio, sensitivity DBW 448 ...
DBW 478
Message frame 13:
1)
DBW 62
Min. step height, message frame no.
DBW 478
Daten für Kanal 13
DBW 64 ...
DBW 94
Message frame 1:
Data for closed-loop controller 1
DBW 480 ...
DBW 510
Message frame 14:
1)
Daten für Kanal 14
DBW 96 ...
DBW 126
Message frame 2:
Data for closed-loop controller 2
1)
Message frames 13 and 14 do not exist in DB-A’.
Allocation of DB-A
and DB-A’
FC162