Power Line Basic PLC Program (P3) 
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0 
2-1 
Detailed Description 
2
2.1  2.1 Key PLC CPU data for 810D, 840D and 840Di 
The tables below show the performance range of the PLC CPUs and the scope of the 
basic PLC program relative to the various controller types.  
Type of control: 810D and 840D 
Key CPU data 
 
  810D / 840D  810D / 840D  810D / 840D 
PLC CPU 
 
 MLFB 
Integrated PLC 
CPU314 
Integrated PLC 
CPU315-2DP 
6ES7 315-2AF00-0AB0  
Integrated PLC 
CPU315-2DP master/slave 
6ES7 315-2AF01-0AB0  
Memory for user and basic 
program 
 64, 96, 128 KB   64, 96 128, 160, 192, 224,    
 256, 288 KB 
 (dependent on option) 
 96, 160, 224, 288, 352, 416,
 480 KB 
(dependent on option) 
Data block memory  Like user memory  Like user memory  Up to 96 KB 
Memory submodule  no  no  no 
Bit memories  2048  2048  2048/ 4096 with PLC 
operating system 03.10.13 or 
later 
Timers  128  128  128 
Counters  64  64  64 
Clock memories  8  8  8 
Program/data blocks 
OB 
 
 
FB 
FC 
DB 
 
 
1, 10, 20, 35, 40, 
80-82, 85, 87, 100,  
121-122 
1-127 
1-127 
1-127 
 
 
1, 10, 20, 35, 40, 
80-82, 85-87, 100,  
121-122 
1-127 
1-127 
1-127 
 
 
1, 10, 20, 35, 40, 
80-82, 85-87, 100,  
121-122 
0-255 
0-255 
1-399 
Max. data block length  16 KB  16 KB  16 KB 
Max. block length FC, FB  24 KB  24 KB  24 KB 
Inputs/outputs 
(address capacity) 
- digital 
- analog 
 
 
768 
64 
 
 
1024/1024 
64 
 
 
1024/1024 
64