Rockwell Automation Current Input Module - Manual (Page 48)

4Ć30
4.6 Restrictions on Use
The channels on a Current Input module in an AutoMax/DCS 5000
system are to be configured from only one application task.
Do not configure achannel on the Current Input module unless a
transmitter or transducer is connected to that channel. If you do,
outĆofĆrange input values will be generated.
If the Current 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 Current Input modules in either a local or
remote AutoMate rack when using a 50 Amp AutoMate Power Supply
(M/N 45C322). When using a20 Amp AutoMate Power Supply
(M/N 45C321) you are limited to:
D 8 Current Input modules in a local rack with an AutoMate 30
Processor
D 5 Current Input modules in a local rack with an AutoMate 40
Processor
D 10 Current Input modules in aremote rack with aRemote I/O
Processor.
You can place up to 15 Current Input modules in a local AutoMax
rack. Note that you can only place up to five Current Input modules
in a remote AutoMax rack due to register transfer limitations. For
additional information refer to the AutoMax Remote I/O
Communications Instruction Manual (JĆ3606).
Note that when Current 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.