4
Upgrading an RF-Based TI560/TI565/TI560T/TI565P to a TI545/TI555/TI575
To
upgrade an existing RF-based 560, 560T
,
565, 565P
system,
replace the existing
programmable controller
, including its chassis,
its power supply
, and all its installed boards
with the 505 base, the 505 power supply
,
545/555 CPU, and RF/RS-485 converter
. T
o
upgrade to a 575 system, replace the existing
programmable controller, (including its chassis,
its power supply
, and all its installed boards)
with a 575 base, 575 Power Supply
, 575 CPU,
575 Remote I/O Annex, 505 base, the 505 power
supply
, and RF/RS-485 converter
. The upgrade
to a 545/555 is shown in Figure 2, and the
upgrade to a 575 is shown in Figure 3.
NOTE:
The 545/555 cannot directly replace
either a hot backup (HBU) configuration or a
system with more than 15 bases.
1.
If the Series 500
remote I/O installation
consists of more than one coaxial (RF)
remote I/O channel, combine these
channels into a single remote I/O channel.
Refer to the section entitled, “Cabling and
W
iring the System,” in the your
system
manual
for information about installation
of a coaxial remote I/O channel.
2.
If the system has more than 15 bases,
multiple VME 575 CPUs can be used.
(Each 575 controller has its own I/O
channel. Refer to the
SIMA
TIC 575 System
Manual
(PPX:575–8101–x) for information
on installation and operation of the 575.)
However
, using multiple CPUs may
require significant program modifications
in order to divide the 565 program and
redistribute the program among the 575
CPUs.
3.
Re-number your bases between 1 and 15 so
that no two bases have the same number
.
Base number 0 is the local base where the
CPU resides and may be used for
additional 505 modules, if desired.
4.
Modify the controller
’
s I/O configuration to
reflect the channel number and base
number changes.
5.
Connect the resulting I/O channel to the
545/555 or the 575 system using the
PPX:505–6860 RS-485/RF I/O Channel
Converter.
6.
When using a 545/555 controller, connect a
120 ohm resistor between pins 3 and 8 on
the RS-485 I/O connector of your CPU, in
order to properly terminate the I/O
channel data lines. When using a 575
controller
, set jumper E8 on the Remote
Annex from the “U” position to the “T”
position to activate termination.
Update time for a special function (SF) module
is significantly faster when you install the
module in the local base, rather than a remote
base. You can improve both SF module
performance and scan performance by replacing
the Series 500 SF modules with Series 505
SF modules and installing them in the 545/555
local base.
If all SF modules cannot be installed in the
local base, consider placing low-activity SF
modules, such as the ASCII, BASIC, or DCP
modules, in a remote base. Place high-activity
modules, such as the NIM or Peerlink
, in the
local base.