Quick Installation Guide
00825-0100-4696, Rev AB
October 2004
Rosemount 848L
STEP 3 CONTINUED...
I/O Transducer Block
The 848L is ordered with either Dry Contact, VDC or NAMUR Inputs.
Each input can have a filter which determines the minimum time a
contact needs to be at a given state to be acknowledged as a state
change.
The following procedure allows the sensors to be configured:
1. Set MODE_BLK.TARGET to OOS
2. For each Input “n” select the parameter IN_n_CONFIG.FILTER
a. Select the desired filter time in the range of 0 to 128msec
3. Set MODE_BLK.TARGET to AUTO
Resource Block
The resource block defines the physical resources of the device, such
as measurement and memory. The resource block also handles
functionality that is common across multiple blocks. The block has no
linkable inputs or outputs, and it performs memory-level diagnostics.
Digital Input Blocks
The DI blocks are used to communicate the current value of a contact,
the state of one of the Boolean equations, or the state of an output.
The DI block chooses the value through the Channel parameter.
Alternatively, the DI block can be configured to pass 8 values in a
packed format to the host system (DeltaV) by using the appropriate
channels. To set the channel number use the following procedure for
each DI block.
1. Set MODE_BLK.TARGET to OOS
2. Select the Channel parameter
3. Select the desired channel number
4. Set MODE_BLK.TARGET to AUTO
4696 Rev AB4x6_print.fm Page 9 Thursday, September 30, 2004 10:38 AM