Which products are affected?
- ESP-DDS1-x (Drive PLC Developer Studio Version 1.4)
- EVS93xx-EI (Servo PLC Version 1.0 up to 2.2)
- EVS93xx-ET (Servo PLC Version 1.0 up to 2.2)
What happens?
If codes are read out via keypad EMZ9371BB a PEr-Trip will occur (PEr = program error). Error number 74 is indicated under code C0161 (current fault).
When does the problem occur?
If codes which have been defined in the instance parameter manager or type parameter manager are copied from another project into the current project (menu
Project>Copy) via the Drive PLC Developer Studio, code units defined by users will not be copied.
The unit is displayed correctly in the tabular form of the instance/type parameter manager. However, if the edit dialog of the code is opened (menu
Insert>Edit object) a unit is not displayed and the unit defined by the user is not included in the selection list for the units.
The current project can be compiled without faults and loaded into the control although the units of the user codes are missing.
If a code with a missing unit is accessed via keypad EMZ9371BB the behaviour described above will occur.
Possible diagnostics?
A code with a missing unit can be recognised by using the keypad EMZ9371BB to 'scroll' over all user codes after a project download.
Short-term measures/recommendations?
If codes which have been defined in the instance/type parameter manager are copied into the current project via the menu
Project>Copy the unit in each code of the edit dialog of the instance/type parameter manager must be checked. Missing units must be re-entered if necessary.
For a final control the keypad EMZ9371BB is to be used for 'scrolling' over all user codes after the project download into the Servo PLC.
Evaluation
If a code with a missing unit is accessed via keypad a PEr-Trip will occur. As a result, the Servo PLC inhibits the controller and the drive is switched to zero-torque. Moreover, the hardware outputs of the Servo PLC are reset and the PLC program processing is stopped.
