5. Programming
GEM80-500 Series Controller
GEM80-500 Technical Manual (T2025En)
(08/04)
Page 5-18
Table 5-5
GEM80-500 Data Tables
Subject Function
Data
Table
Content Min.
Table
Size
Maximum Table Size
Cleared to Zero at
Halt/Run Transition
Cleared to Zero
at Power Off/On
Cleared to Zero
(by Clear Store
Command)
I/O Basic
and
Verification I/O
Highway Data
A
These tables store the states of INPUT
transducers connected to the Basic and
Verification I/O Highways
0
YES Except if R0.0 set
YES
YES
B
These tables store the OUTPUT states
(derived from the execution of the user
program for output to the Basic and
Verification I/O Highways
0
The maximum A/B table
size is dependent on which
‘plug-in’ modules are
present e.g.
with one 9713-4020
module present the
maximum size is 1040 (16
+ 1024) words (each 16
bits).
YES Except if R0.0 set
YES
YES
C
These tables store data RECEIVED by the
GEMCAN I/O Scaner module(s).
0
YES Except if R0.0 set
YES
YES
D
These tables store data derived by
execution of the user program for
TRANSMISSION by the GEMCAN I/O
Scanner module(s).
0
The maximum C/D table
size is dependent on which
‘plug-in’ modules are
present e.g.
with one 9720-4020
module present the
maximum size is 125 x 16
= 2000 words.
With two modules present
4000 words.
YES Except if R0.0 set
YES
YES
Serial
Communication
Links Data
J
These tables store data RECEIVED by the
controller through the serial
communication links
0
YES Except if R0.0 set
YES
YES
K
These tables store data derived by
execution of the user program for
TRANSMISSION on the serial
communication links
0
256 J and K tables are
required for each of the
serial ports 1 to 4.
The number of tables
allocated is 256 J and 256
K tables multiplied by the
number of the highest port
configured e.g. for port 4
configured the maximum
size is 1024 words (each
16 bits)
YES Except if R0.0 set
YES
YES