Issue
The purpose of this resolution is to inform Momentum M1E users that the IEC Exec. has been upgraded to version 1.21.

Fixes problems where the M1E could crash with an error code 0835 if one segment is configured.
1. Web page applets would not be displayed in a browser only if the web pages were downloaded to the M1E using the Web Loader Utility on a Win98 Operating System.
2. Supports classful addressing.
3. 'M1E I/O Status' web page is misleading. A single generic Momentum I/O base displays the same LED pattern for the various modules available. These LED's only show the first I/O mapped input and output word, regardless if its an analog module or a discrete base. A new applet will display 4x and 3x register data.
4. Fixes a potential problem when used with a 172JNN21032 Modbus Option Adapter, an M1E may crash immediately after a Start command is issued to the processor.
5. New feature allows sockets to remain open using the MSTR function block. (requires Concept 2.6 SR2)
6. Adds MBP_MSTR function block option that allows a connection to remain open. It is only available for the following EFBs:
CREAD_REG
CREADREG
CWRITE_REG
CWRITEREG


Product Line
171CCC98030 processor using the IEC Exec
171CCC96030 processor using the IEC Exec


Resolution
Installing IEC Exec. v.1.21 resolves the above-mentioned issues

Note: It is recommended to power cycle the M1E immediately after downloading an Exec.