MFS message formatting functions

IMS provides message formatting functions for MFS. The control blocks format messages for different device types.

Input message formatting
Use the following information to format your MFS input messages.
General rules for multiple DPAGE input
Follow these rules for multiple DPAGE input.
3270 and SLU 2 input substitution character
A X'3F' can be received on input by IMS TM from some terminals (such as by using the ERROR key).
Input format control for ISC (DPM-Bn) subsystems
Use the major input message formatting functions of MFS with ISC nodes.
Output message formatting
IMS supports the following MFS output message formatting, physical and logical paging, and requirements for output devices.
Output format control for ISC (DPM-Bn) subsystems
IMS supports the major output message formatting functions of MFS with ISC nodes.
Your control of MFS
IMS provides MFS facilities that can assist you, or allow a remote program to control the display or transmission of output messages.
MFS format sets supplied by IMS
Several format sets are provided by IMS for system use and to serve as defaults when you have not supplied a correct MOD name. The IMS-supplied control blocks reside in the IMS.FORMAT library. When the MFSTEST facility is in use, these control blocks also reside in the IMS.TFORMAT library. They can be used in any IMS installation with MFS by specifying the appropriate MOD name after the /FORMAT command. In addition, the format definitions can be used independently by specifying the format name in the SOR= operand of the user-written message definition.
MFS formatting for the 3270 or SLU 2 master terminal
If the IMS master terminal is a 3270 or SLU 2 display device defined as a 3275, 3277 model 2, or 3270-An with SIZE=24x80, you can select the IMS-supplied format that uses MFS. To use the IMS-supplied format you must specify OPTIONS=(...,FMTMAST,...) in the COMM macro during IMS system definition.
MFS Device Characteristics table
The MFS Device Characteristics table (DFSUDT0x) is generated during system definition for the 3270 or SLU 2 devices defined as TYPE=3270-An in the TYPE or TERMINAL macro statement.
Version identification function for DPM formats
The MFS DOF defines how data is formatted for presentation to the remote program so the remote program can efficiently locate and process the data. The MFS DIF defines how data is presented to IMS from the remote program.

Parent topic: MFS message formats