• Enhanced Automatic Tag Generation support to include extended (non-ASCII) characters.

• Fixed an issue where an uninitialized buffer could cause a buffer overflow and result in a crash.

• Fixed an issue where an invalid data length in a response could cause a buffer overflow and result in a crash.

• Fixed an issue where the driver would treat a WSAEWOULDBLOCK as an error when waiting to receive data. This could result in an error reported for a valid packet.

• Added a new S7-1500 model.

• Added support for automatic tag generation from a Step 7 project file for S-400 and S-300 controllers.

• Added support for BOOL arrays.

• Added Applicom address syntax to provide both Byte and Word order control at the tag level.

• Fixed a Read/Write issue introduced in 4.190 that can occur for S7-200 addresses utilizing the KT suffix.

• Added Read/Write support for the S7 TIME data type as String for the following memory types: DB, I, E, Q, A, PI, PE, PQ, PA, M, and F.

• Added Read/Write support for the S7 DATE data type as String for the following memory types: DB, I, E, Q, A, PI, PE, PQ, PA, M, and F.

• Added write support for the S7 TIME_OF_DAY data type as String for the DB memory type.

• Updated the Read/Write support for the S7 TIME_OF_DAY data type as String to include the following memory types: I, E, Q, A, PI, PE, PQ, PA, M, and F.

• Updated the read support for the S7 DATE_AND_TIME data type as String or Date to include the following memory types: I, E, Q, A, PI, PE, PQ, PA, M, and F.

• Fixed an issue where the Byte Order (Big Endian or Little Endian) for a tag could unexpectedly change. This occurred when there were two or more devices under one channel that had tags pointing at the same address, but with a different Byte Order selected. This could result in an incorrect Byte Order for one or all of those tags.

• Added support for the Date data type for the Siemens DATE_AND_TIME (DT) data block memory type.

• Added write support for the Siemens TIME_OF_DAY (TOD) data block memory type.

Added support for the Siemens TIME_OF_DAY (TOD) data type. Exposed the hint for the Siemens "DATE_AND_TIME" (DT) data type.

• Fixed a deadlock issue that could cause the channel to stop communicating.

• Modified the driver to support locale-specific multi-byte strings.

• Added support for Siemens S7-1200 model.

• Fixed issue where the Runtime could terminate after multiple writes to bit addresses.
• Resolved issue introduced in 5.1 release where device-level _System tags (_Error,_NoError) were not working properly.

• Added support for DNS hostname resolution.
• Fixed issue where driver was posting multiple "Device Not Responding" messages.