Technical Specifications
A-8
C7-635 Control System
A5E00155581-04
Data Areas and their Retentive Characteristics
Total retentive data area
(including memory bits; timers;
counters)
All
Bit memories 256 bytes
• Retentivity Adjustable
• Retentivity preset MB 0 to MB 15
Clock memories 8 (1 memory byte)
Data blocks Maximum 511
• Size Maximum 16 Kbytes
Local data per priority class Maximum 510 bytes
Blocks
Total 1024 (DBs, FCs, FBs, OBs, SDBs)
The maximum number of blocks that can be loaded is depending on
the MMC used.
OBs See instruction list
Size Maximum 16 Kbytes
Nesting depth
• Per priority class 8
• Additional nesting depths
within an error OB
4
FBs Maximum 512 (FB 0 to FB 511)
• Size Maximum 16 Kbytes
FCs Maximum 512 (FC 0 to FC 511)
• Size Maximum 16 Kbytes
Address Areas (I/O)
I/O address area overall Maximum 1024 bytes/1024 bytes (can be addressed by user)
• Distributed Maximum 1,000 bytes
I/O process image 128 bytes/128 bytes
Digital channels Maximum 8,192
• Of total, number of local
channels
Maximum 992
• Integrated channels 24 DI / 16 DO
Analog channels Maximum 512
• Of total, number of local
channels
Maximum 248
• Integrated channels 4 + 1 AI/2 AO
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