MFS CONTROL BLOCK CONCEPT:
|
DIF |
Device Input Format |
Description of data for input display |
|
DOF |
Device Output Format |
Description of data for output display |
|
MID |
Message Input Descriptor |
Description of program's I/O area for input |
|
MOD |
Message Output Descriptor |
Description of program's I/O area for output |
Based on the above concept we will see how to set the MOD NAME for the associated screen/MFS.
Below are few steps that one should follow:
Step 1: OPEN the screen in APS PAINTER by going through 2.6 option from ISPF Primary Menu
Step2: Write PM on the edit screen as shown below
Step 3: Write Program name in MID NAME row and formatted message in MOD NAME as shown below.
Step4: Save the changes as suggested above and Compile the APSSCREEN or MFS.
Step5: Run the transaction /FOR <MOD-NAME> in IMS Test region to verify your changes.
/FOR <MOD-NAME> statement does following,
1) Display the associated screen on terminal
2) Corresponding MID,DIF & DOF are active
3) The first field (MFLD) of MID represents the transaction to be initiated, once user key the data the corresponding MPP starts executing to read the message from input queue
