4
I/O NUMBER ASSIGNMENT
4.7 I/O Assignment Using GX Developer
4.7.1 Purpose of I/O assignment using GX Developer
4
- 23
1
O
verv
iew
2
Per
fo
rma
nce
S
p
ecifica
tio
n
3
S
equ
en
ce P
ro
g
ra
m
Co
nfig
ura
tio
n a
nd
E
xecut
io
n Co
nd
iti
o
ns
4
I/O N
unb
er
Assig
n
m
e
nt
5
Me
mor
ie
s a
nd
File
s
Ha
nd
led
by CP
U Mo
du
le
6
Func
tions
7
Co
mmu
nic
a
tion
us
in
g
bu
ilt
-i
n E
th
e
rne
t po
rt
s o
f
CP
U mod
u
le
8
Co
mm
un
icatio
n
w
ith
Int
e
lli
ge
nt
Fun
ction
Mo
du
le
4.7 I/O Assignment Using GX Developer
This section describes the I/O assignment using GX Developer.
4.7.1 Purpose of I/O assignment using GX Developer
The I/O assignment is set using GX Developer in the following cases.
(1) Reserving points for the change in the future
The number of points can be reserved in advance so that the I/O numbers do not
need to be modified when the current module is changed to the one with the different
number of occupied I/O points in the future.
For example, a 32-point input module can be assigned for the slot where a 16-point
input module is actually mounted.
(2) Preventing I/O numbers from changing when converting modules
You can avoid the change in the I/O numbers when an I/O module other than 16-point
module or intelligent function module (special function module) is removed due to a
malfunction.
(3) Changing the I/O numbers to those used in the program
When the designed program's I/O numbers are different from the actual system I/O
numbers, each module's I/O number of base units can be set to program-I/O number.
(4) Setting the input response time (I/O response time)
The input response times of input modules, I/O composite modules and interrupt
modules can be changed according to the system.(
(5) Error-time output mode setting
The error-time output mode can be set to output modules, I/O composite modules,
intelligent function modules and interrupt modules.(
(6) Setting the switch of intelligent function modules and interrupt modules
The switches of an intelligent function modules and interrupt modules can be
set.(
(7) Setting outputs during CPU module error
The output status (hold/clear) of the output module and/or intelligent function module
when the CPU module stops operation due to a stop error can be set.(
(8) Setting CPU module operation during a hardware error of intelligent
function modules
The operation status (continue/stop) of the CPU module when a hardware fault
occurs in the intelligent function module can be set.(