Wiesemann & Theis GmbH

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Firmware:

Web-IO 4.0 Digital 12xIn, 12xOut, 1xRS232

#57731

Current firmware
Date Changes and comments Revision
July 16, 2026
  • TLS - Certificate management revamped
  • Box2Box - Improved restoration of lost connections
Rolling back to earlier firmware versions after this update may cause problems and is not recommended.
 1.82
UHD download
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Older firmware
Date Changes and comments Revision
June 11, 2026
  • Browser access - Improved request management
  • Internal memory management revised
 1.81
on request
May 22, 2025 1.75
on request
April 15, 2025
  • Certificates - Format discrepancies in signing request eliminated
  • Actions - Replacement for <IP> corrected
  • Email - Spaces allowed between multiple email addresses
 1.74
on request
June 3, 2024
  • Input Counter - errors in counter overrun corrected
 1.72
on request
January 31, 2024
  • MQTT - Payload is only checked for presence instead of agreement
  • MQTT - DNS resolution is more dynamic when connection is opened
  • Actions - Interval Timer L for last day of the month inserted (also possible: L-n)
 1.70
on request
December 8, 2023
  • Actions - HTTP requests support preshared bearer tokens.
  • Modbus-TCP - Accessibility for a parallel connection
  • MQTT - Box-to-Box - Outputs from Web-IO A follow Input-Publish from Web-IO B
1.69
on request
March 23, 2023
  • RS232 - Handshake settings remain unchanged after Power ON
  • TCP/IP stack - MTU up to max. 1500 possible
  • OPC UA - Problems with Output Pulse Mode fixed
  • Actions - Host name for HTTP requests in the head corrected
 1.66
on request
February 2, 2023
  • Homepage - With showing without menu tree, login as User is also possible
  • TLS/SSL - SNI support (Server Name Indication) activated
 1.65
on request
December 12, 2022
  • IP stack - MTU settable
  • IP stack - Improved processing of fragmented UDP packets
  • System start - When boot error occurs update mode is activated for system restore
  • MQTT - Publish is suppressed when <disable> is entered as payload
  • OPC UA - URI query corrected
 1.64
on request
November 3, 2022
  • DHCP - Processing of the option flags expanded
  • OPC UA - Transfer of application URI corrected
  • Config Upload - Parameter transfer corrected
  • System start - Configuration initialization optimized
 1.63
on request
September 26, 2022
  • Actions - up to 16 outputs on another Web-IO can be switched
  • Actions - placeholders in the HTTP payload are supported
  • Actions - for HTTP-POST without payload a content length of 0 is entered in the header
  • OPC UA - NodeID overview can be recalled
  • OPC UA - your own NodeIDs can be loaded via list
  • OPC UA - setting outputs by writing the CurrentOutputState-Nodes is possible
  • OPC UA - writing the input counters by writing the CurrentInputCounter-Nodes is possible
  • MQTT - QoS2 processing revised
  • Modbus-TCP - diagnostics querying expanded
  • Input-Counter - problems with bi-directional counting fixed
  • System - Config Upload optimized and accelerated
Note: If, in the existing configuration, multiple outputs are used in an action, this option must be reset following an update!
 1.62
on request
April 5, 2022
  • Passwords - non-allowed characters are rejected
  • Firmware update: Initiating via button in the interface possible
  • Emergency access - missing login page added
  • SNMP - MIBs and OIDs expanded
  • OPC UA - Node-IDs can be modified via list upload
  • Actions - switching of multiple outputs optimized
Please use the newest included version of WuTility for the update.
 1.56
on request
January 11, 2022
  • HTTPS - Chunked transfer revised
  • SSL/TLS - Certificate upload now possible again
  • DHCP - IP assignment with DHCP relays adapted
  • Boot sector - Emergency access when firmware update is interrupted now revised
Please use the newest included version of WuTility for the update.
 1.54
on request
October 7, 2021
  • Outputs - Pulse mode revised
  • Inputs - Short pulse processing improved
  • REST - Digest authentication corrected
  • Homepage - Size of display tiles adjusted
  • My Web Page - JavaScript optimized
 1.52
on request
August 2, 2021
  • Actions - HTTP Request Basic Auth. revised
  • Actions - HTTP Request Digest Auth. revised
  • Actions - HTTP Request POST revised
  • Boot Up - Denial of Service by UDP flood blocked
 1.51
on request
May 3, 2021
  • OPC - OPC UA implemented
  • TLS - Uploading your own certificates is possible
  • Actions - REST token timeout adjusted
  • Actions - REST compatibility improved
  • Pulse Mode - Internal handling improved
 1.50
on request
August 12, 2020
  • SSL/TLS - TLS stack expanded with Version 1.2
Reverting to firmware revisions lower than V1.36 is no longer possible after this update!

After the update a restart (simple reset) of the Web-IO is required

To load this firmware, WuTility must be used in the newest version included!
 1.44
on request
July 2, 2020
  • Socket-API - counterclear - set value corrected
  • Web-API - counterclear - set value corrected
  • Web-API - Cross Origin Request expanded
  • Actions - POST added to HTTP requests
  • Actions: Token authentication possible with HTTP requests
After the update a restart (simple reset) of the Web-IO is required

To load this firmware, WuTility must be used in the newest version included!
 1.43
on request
May 25, 2020
  • Internal processing latencies reduced
 1.41
on request
March 12, 2020
  • IO-LED indicator - synchronization problem after reset fixed
 1.40
on request
March 5, 2020
  • Actions - Cold start as trigger possible again
  • Actions - Warm start as trigger possible again
  • SNMP - Indexing problem for actions corrected
  • MQTT - SSL transmission and Client-ID introduced
 1.39
on request
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