Rockwell Automation Current Input Module - Manual (Page 31)

4Ć13
4.2 Analog Input Channel Configuration
Procedure
Analog input channel configuration information is stored onĆboard
the Current Input module. At system powerĆup, default values are
automatically placed in the module's memory. You can change these
default values on a channelĆbyĆchannel basis. See figure 4.11.
To do this, you need to set bits 12 to 15 of register 31 equal to zero to
make sure the Current Input module is in the READY state and then
place a value in registers 23 through 31 for each analog input
channel you wish to configure:
D Channel Number Register (Register 23)
D Maximum Scaling Value (Register 24)
D Minimum Scaling Value (Register 25)
D Number of Samples Register (Register 26)
D High High Alarm Register (Register 27)
D High Alarm Register (Register 28)
D Low Alarm Register (Register 29)
D Low Low Alarm Register (Register 30)
D Configuration Command Register (Register 31)
After you have placed values in registers 23 through 30 and put the
write Configuration Command Code into register 31, the system
automatically transfers the new channel parameters to the
appropriate locations in memory. To use these parameters on
another unconfigured channel, simply change the channel number
and put the write Configuration Command Code into register 31. If
you want to configure a channel with the original powerĆup default
values, you must first place the read Configuration Command Code
in register 31 to restore these values to registers 23 through 30. Note
that the channels on the Current Input module must be configured
from only one application program.