Rockwell Automation 1770, D17706.5.16 Ref Mnl DF1 Protocol Command - Manual (Page 227)

13–12 PLC Addressing
Publication 1770Ć6.5.16 - October 1996
PLCĆ5 Logical Binary Address to Access the Address N7:30
level 1 (value = 0); data table
0 7 30
1
2
3
4
0 0 0 1 1 1 0 0
0 0 0 0 0 0 0 0
0 0 0 1 1 1 0 0
0 1 1 1 1 0 0 0
Byte
0 Data table area = level 1
7 File = level 2
30 Element = level 3
level 2 (value = 7); file
level 3 (value = 30); element or word
mask byte: indicates 3 levels of addressing will be encoded.
PLCĆ5 Logical Binary Address to Access the Address B3:300
1
2
4
5
0 0 0 1 1 0 0 0
0 0 0 0 1 1 0 0
1 0 1 1 0 0 0 0
0 0 0 0 0 1 0 0
3 1 1 1 1 1 1 1 1
Byte
level 2 (value = 3); file
level 3, low byte (value = 44); element or word
mask byte: indicates 3 levels in the address. Level 1 uses
the default (0). Therefore, only levels 2 and 3 will be
encoded.
FF flag indicating the next level is too large (300) to encode
in one byte so it will be encoded into the next 2 bytes.
level 3, high byte (value = 256); element or word
PLCĆ5 Logical Binary Address to Access the Address T4:2.ACC
1
2
4
5
0 0 1 1 1 1 0 0
0 0 0 0 0 0 0 0
0 0 0 0 1 0 0 0
0 0 0 0 1 0 0 0
3 0 0 0 1 0 0 0 0
Byte
level 1 (value = 0); data table
level 2 (value = 4); section
level 3 (value = 2); element or word
mask byte: indicates 4 levels of addressing to encode.
level 4 (value = 2); subĆelement À
➀ SubĆelement: 00 = control, 01 = preset, 02 = accumulative.
PLCĆ5 Logical Binary Address to Access the Address PD12:10.SP
1
2
4
5
0 0 1 1 1 1 0 0
0 0 0 0 0 0 0 0
0 0 1 0 1 0 0 0
0 0 0 0 1 0 0 0
3 0 0 1 1 0 0 0 0
Byte
level 1 (value = 0); data table
level 2 (value = 12); section
level 3 (value = 10); element or word
level 4 (value = 2); subĆelement ➀
mask byte: indicates 4 levels of addressing to encode.
➀ SubĆelement: 00 = control, 0 = preset, 02 = accumulative.