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5 Understanding Programming
CJ2 CPU Unit Software User’s Manual
5-6 Instructions
5
5-6-2 Specifying Operands
z Bit Addresses
Example: The address of bit 03 in word 1 in the CIO Area would be as shown below.
With the CJ2 CPU Unit, bit addresses can be specified in the DM and EM Areas.
Example: DM area
5-6-2 Specifying Operands
Addressing I/O Memory Areas
Bit number (00 to 15)
Word address
@@@@.@@
1. 03
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
0
1
2
Bit number: 03
Word address: 0001
Word
Bit: CIO 0001.0
D1001.03
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
D1000
D1001
D1002
Bit number: 03
Word address: D1001
Word
Bit: D1001.03