Rockwell Automation 61C542 Voltage Input module - Manual (Page 48)

4Ć30
4.6 Restrictions on Use
The channels on a Voltage Input module in an AutoMax/DCS 5000
system are to be configured from only one application task.
Do not configure a channel on the Voltage Input module unless a
transmitter or transducer is connected to that channel. If you do, the
result will be an outĆofĆrange condition.
If the Voltage Input module is in an AutoMate remote rack, both the
master Remote I/O Processor and the slave Remote I/O Processor
must be M/N 45C201B or later. If either Processor is of an earlier
version, the remote rack will not stay onĆline with the master.
You can place up to 15 Voltage Input modules in either a local or
remote AutoMate rack when using a 50 Amp AutoMate Power Supply
(M/N 45C322). When using a 20 Amp AutoMate Power Supply (M/N
45C321) you are limited to:
D 8 Voltage Input modules in a local rack with an AutoMate 30
Processor
D 5 Voltage Input modules in a local rack with an AutoMate 40
Processor
D 10 Voltage Input modules in a remote rack with a Remote I/O
Processor.
You can place up to 15 Voltage Input modules in a local AutoMax
rack. You can place up to five Voltage Input modules in a remote
AutoMax rack due to register transfer limitations. For additional
information refer to the AutoMax Remote I/O Communications
Manual (JĆ3606).
Note that when Voltage Input modules are placed in an AutoMax
remote rack:
D the powerĆup default values in registers 23 to 31 are reset to zero.
You must individually enter new values into these registers.
D the Read Channel Configuration command (register 31, bits 12 to
15) will not update registers 24 to 31 and therefore cannot be
used in a remote installation.