content_image/978410.jpg content_image/978411.jpg
<img src='content_image/978410.jpg'>

4. Select one or more empty check boxes in the I/O Config pane to assign the CHPID. In the Hardware pane, the CHPID number  is inserted in the CHPID column. Iin the Assigned By column, the value of Manual  is inserted. 

5. If you select more than one CHPID for an ICS SR adapter type, you see the Multiple --> value (Figure 4-30) inserted in the CHPID and Assigned By columns. 

<img src='content_image/978411.jpg'>

The Automatic Mapping  button becomes available after you assign all the CHPIDs of IOCP type CIB or CS5. 

## 4.9 Processing Automatic Mapping then CU Priority 

If you are importing an IOCP statements file from a 2964 that had CU Priority values defined, review the CU Priority values first. The CHPID Mapping Tool can then perform the availability functions appropriately for a 3906. 

You must assign priorities if you want to make some control units more important (in the CMT processing order) than others, or have two (or more) control units that you want the CMT to process at the same time. 

