| RCC Series | 15.76 | 2/4/26 | Enhancement | Security improvements
Ethernet ports are open only if they are configured in Cscape and downloaded to the device. | Bootloader, Cscape 10.1 or later |
| RCC Series | 15.76 | 2/4/26 | Bug Fix | Resolved
Email sending using the cell modem was not working after restoring the signal, resulting in a send failure. | Bootloader |
| RCC Series | 15.76 | 2/4/26 | Bug Fix | Resolved
In the report configuration, if the first line was left empty and the “Form feed at End of Report” option was unchecked, the report printed only on the first trigger and failed to print on subsequent triggers. | Bootloader |
| RCC Series | 15.76 | 2/4/26 | Bug Fix | Resolved
The device displayed a System Exception when devices with dual ports were configured with Modbus TCP and had more than 512 total scan list entries across both ports. | Bootloader |
| | | | Download >Download Firmware 15.76 Release Notes | |
| RCC Series | 15.74 | 7/25/25 | Bug Fix | • Resolved: After refreshing webpages, the Trend Data on webpages displayed the average of the actual data.
• Resolved: Added support for the following Retentive Trend types: Average, Minimum, Maximum, and Downsample | Bootloader, Cscape 10.1 or later |
| RCC Series | 15.74 | 7/25/25 | Bug Fix | Resolved: Bitmaps were not being displayed on the device. | Bootloader |
| RCC Series | 15.74 | 7/25/25 | Bug Fix | Resolved: The device was not sending the NMT Start Command to CANOpen devices after power up. | Bootloader |
| RCC Series | 15.74 | 7/25/25 | Bug Fix | Resolved: The email stopped working when using Secomea Email Relay on port 25 without authentication. | Bootloader |
| | | | Download >Download Firmware 15.74 Release Notes | |
| RCC Series | 15.70 | 9/20/24 | Enhancement | Added support for OCSIO models ADC270 and DQM602. | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Enhancement | Retain variables support added for variable-based advanced ladder logic. Note: This requires Cscape version 10 onwards. | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: Modbus Client sending Zero Value when Holding Register is Not Zero | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: CAN2 stopped working after several power cycles | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: Screen calibration was being corrupted when data was being written beyond 128 words (%M2048) using Write Removable Media block | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: UTC time was not updating when downloaded from Cscape | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: Title bar of password object was showing nonsense language when Unicode fonts were created | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: WebMI alarm history page not listing the RTN alarms | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: ASCII string on the Allen Bradley PLC was being corrupted when second ASCII string was being transferred from controller | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: CV value of a PID block was not being updated when configured in the Enhanced IEC program | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: Adjacent status register was being affected when the first status register was being updated in RM copy and delete blocks | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved Read RM block was reading entire elements / data for an ASCII data type instead of reading only the configured number of elements | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: Gmail was not working for certain SMTP IPs | Bootloader, Cscape 9.90 SP10 |
| RCC Series | 15.70 | 9/20/24 | Bug Fix | Resolved: Protocol size was displayed as +++++++ for BACNet MSTP server in system menu | view status | Bootloader, Cscape 9.90 SP10 |
| | | | Download >Download Firmware 15.70 Release Notes | |