Upgrading Existing Series 500 Installations
D-6
TI545/TI555 System Manual
D.3 Upgrading an RS-485 Based TI560/TI565/TI560T/TI565P System
To
upgrade an existing RS-485 based TI560, TI560T
, TI565, TI565P system,
replace the existing programmable controller
, including its chassis, power
supply and all installed boards with the TI505 base, power supply
, and
TI545/TI555 controller
. The upgrade is shown graphically in Figure D-2.
NOTE:
Note that the TI545/TI555 cannot directly replace an hot backup
HBU configuration.
1.
If the series 500 remote I/O installation consists of more than one
twin-axial (RS-485) remote I/O channel, combine these channels into a
single remote I/O channel. Refer to Section 4, “Cabling and W
iring the
System,” for information about installation of a twin axial remote I/O
trunk line.
2.
Renumber your bases so that no two bases have the same number and
so that base number 0 is not used.
3.
Modify the controller
’
s I/O configuration to reflect the channel number
and base number changes.
4.
Connect the I/O trunk line to the TI545/TI555 I/O connector
.
Update time for a special function module is significantly faster when you
install the module in the local base, versus a remote base. Y
ou can improve
SF module performance, and scan performance, by replacing the Series 500
SF modules with Series 505 SF modules and installing them in the
TI545/TI555 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.
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