| statements: | LU |
| dependencies: | VTAM® and NCP |
| range: | 0–255 PU type 2 and type 2.1 0–63 PU type 1 |
Specifies the logical unit’s local address at the associated physical unit. Specify the addresses in ascending order. LOCADDR=0 specifies an independent LU.
An LU definition statement is not required for every possible
local address, and LOCADDR values need not be consecutive. Unused
local addresses smaller than the largest local address at a station
are not assigned network resources.
Note:
- The value of LOCADDR depends on the requirements of the device being defined. Consult the appropriate component description manual for these restrictions; for example, logical units associated with a 3279 or 3276 control unit must have a LOCADDR in the range 2–33.
- Although you can use this operand to define independent LUs, it is recommended that you either use dynamic definition or predefine the independent LUs as CDRSCs.
- VTAM cannot recognize a dynamically changed LOCADDR on the first activation of an NCP, even when VARY ACT,UPDATE=ALL is used. (Warm starts are considered initial activations.) However, on changes to LOCADDR after the first activation, VTAM can compare the value in the definition statement to the value previously coded and recognize the change.