Addressing
Logical
2-6
Logical Addressing
Where:
Is the:
#
File address identifier. Omit for bit, word, and structure addresses (also indicates indexed addressing, see next
page)
X
File type:
B - binary
N - integer
T - timer
MG - message
1
CT - ControlNet Transfer
2
C - counter
O - output
A - ASCII
PD - PID
1
ST - ASCII string
1
F - floating point
R - control
D - BCD
SC - SFC status
1
I - input
S - status
BT - block transfer
1
F
File number: 0 - output
1 - input
2 - status
3 - 999 any other type
:
Colon delimiter separates file and structure/word numbers
e
Structure/word number:
0 - 277
octal for input/output files
0 - 31
decimal for the status file (Classic PLC-5 processors)
up to:
0 - 127
decimal for the status file
0 - 999
for all the file types except MG, PD, and ST files
.
Period delimiter is used only with structure-member mnemonics in counter, timer and control files
s
Structure-member mnemonic is used only with timer, counter, control, BT, MG, PD, SC, and ST files
/
Bit delimiter separates bit number
b
Bit number:
00 - 07 or 10 - 17 for input/output files
00 - 15 for all other files
00 - 15,999 for binary files when using direct bit address
1
Enhanced, Ethernet, and ControlNet PLC-5 processors only.
2
ControlNet only.
bit number
bit delimiter
structure-member
delimiter
structure/word number
delimiter
file number
file type
file address
mnemonic
identifier
# X F: 3. s / b