TECHNICAL BULLETIN
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[Issue No.] FA-A-0147-A
1. PRECAUTIONS
FOR
REPLACEMENT
(1) System configuration
Item
Precaution
Replacement method
Reference
RS-232 port
There is no RS-232 port.
*1
Use a USB or Ethernet port.
To communicate with an RS-232
interface, use the QJ71C24N(-R2) in
the system.
-
Applicable products and
software
A programming tool that was
available for the QnUD(E)(H)CPU
can no longer be used or needs to
be upgraded. (The use of GX
Developer is not supported in the
system after replacement.)
Some GOTs and intelligent
function modules that were
available for the QnUD(E)(H)CPU
can no longer be used or need to
be upgraded.
Upgrade the version of GX Works2
to the one compatible with the
QnUDVCPU.
Replace the GOT and intelligent
function modules to those
compatible with the QnUDVCPU.
Chapter 2
Multiple CPU system
Scan time is shortened in the
High-speed Universal model QCPU
because operations are performed
at higher speed. When used in a
multiple CPU system, the
High-speed Universal model QCPU
accesses to the control modules
frequently. As a result, the
processing time in other CPU
modules may increase.
Check the processing timing of other
CPU modules and adjust the access
frequency of the High-speed
Universal model QCPU using timers
or the constant scan function.
QCPU User's Manual
(Multiple CPU System)
Current consumption
The current consumption increases.
Select a power supply module
according to the total current
consumption in the system.
QCPU User's Manual
(Hardware Design
Maintenance and
Inspection)
*1: This applies when the QnUD(H)CPU is replaced with the High-speed Universal model QCPU.
