Technical data

12.4.1 LSAP_STATUS_Request
The LSAP_STATUS request block must be structured as follows:
com_class 0. byte: format KH, service request to layer 2
here:
FDL request =00
H
user_id 1st byte: freely assignable ID, which is returned
unchanged with a confirmation.
(optional)
service_code 2nd byte: format KH, type of service requested:
LSAP_STATUS=19
H
link_status /
service_class/
3rd-4th byte: irrelevant
RSAP 5th byte: format: KH,
Range of values of the remote SAP no.: (0 .. 63)
rem_add_station 6th byte: format KH
Range of values of the station address: (0 .. 126)
rem_add_segment 7th byte: format KH, irrelevant
The arrangement of the data in a DB from which they can then be read by
the HDB SEND is explained in more detail in Section 12.9.2.
Service and Diagnostics using FMA Functions B8976060/02
Volume 1 12 - 18