Please find below some values examples that should be written or read from the Soft-Starter SSW-06 via Fieldbus for executing read or write commands in parameters.
1 – Initial condition, the whole I/O area has value 0 (zero):
Input (drive → master) Output (master → drive)
0000h 5th word 0000h
0000h 6th word 0000h
0000h 7th word 0000h
2 – The master sends a command for reading of the parameter P102. If the value of the toggle bit was to 0 (zero), then its value is written to 1 for indicating that a new command was sent:
Input (drive → master) Output (master → drive) 0000h 5th word 0011h
0000h 6th word 0066h
0000h 7th word 0000h
3 – After the command is received, the drive answers with the content of the Parameter P100 = 20. The error bits will be reset, indicating that the read has been realized with success:
4 – The master sends a new command for writing of P102 = 50. The toggle bit value was 1, then its value is written to 0 (zero) for indicating that a new command was sent:
Input (drive → master) Output (master → drive) 0011h 5th word 0002h
0066h 6th word 0066h
0014h 7th word 0032h
5 – After the new command has been received, the drive executes the action and responds that the command has been executed with success:
Input (drive → master) Output (master → drive)
0002h 5th word 0022h
0066h 6th word 0066h
0032h 7th word 0032h
Input (drive → master) Output (master → drive)
0011h 5th word 0011h
0066h 6th word 0066h
0014h 7th word 0000h
5 ERRORS RELATED TO THE FIELDBUS COMMUNICATION
Fault Description of the Actuation Possible Causes and Solutions E30
Communication board inactive (P085 = 1)
When during the starting process of the communication board (after power on or reset), the drive cannot execute with success the routines that enable the board.
During the drive operation, when the drive cannot access correctly the data of the communication board.
In general, the fault message E30 occurs due the problems during the data exchange between the control board of the Soft-Starter SSW-06 and the communication board.
■ Check if the communication board model (Profibus DP or DeviceNet) matches with the programmed one in P309.
■ Check the installation of the communication board, looking if there are bent pins, or if there is bad connection to the bus that connects the communication board to the connector XC12 of the Soft-Starter SSW-06 control board.
■ Check the condition of these connectors by noting if there is oxidation or any foreign material that can impair the connection.
Please note that after the fault E30 has been detected, the drive can only be operated again by the communication board after the drive is reset.
The communication with the network master is not possible after the communication board has been programmed at P309 The drive is offline and indicates the fault E29 on the HMI.
This fault message is displayed when the communication board is unable to communicate with the network master. This fault can occur due to two reasons: fault in the master configuration ou due to network connection.
Problems with the network connection:
■ Check if the cable passage has been carried out properly and if the drives and the cable shields have been grounded correctly.
■ Check if there are no bad contact problems, contact oxidation or short-circuit between the network signals. Check also if the signal transmission cables are not broken or reversed.
■ Check if the two segments of the termination resistors are disposed correctly.
■ Check if the used communication baud rate is not too high and if the cable length is not out of allowed range. In general the network becomes more susceptible to problems, the higher the used communication baud rate.
Problems with the master configuration:
■ Check if the number of I/O words that were programmed in the master is the same as configured in the slave (see parameter description P309 - item 3.2). The indication LEDs on the communication board can give information about this condition (see Table 3).
■ Check if the address programmed for the slave is the same address that has been configured for the master.
■ Check if the GSD or EDS files of the communication board Anybus-S were recorded correctly and if they were used by the network configuration tool.
■ For the network DeviceNet, the master must be in running status. If it is Idle status, the drive will display the fault E29.
■ For the Profibus network there is the function for detecting the master in Stop. It is necessary to observe if this function is active (by means of parameter P310), if the master is in Stop and if the bit corresponding to this function in the command word is active.
■ Specific configurations of a determined equipment can also influence the communication. Is this case, a good knowledge about the master operation on the network is required.
E29 Intermittent
The drive is unable to communicate to the master, and eventually the fault E29 can be displayed, informing that the communication board is offline.
If the communication is online, this means that the master has been configured correctly and that the communication to the slave is possible. In this case, eventual errors may be caused due to installation problems or electromagnetic interference.
■ Check if the cable passage has been carried out properly and if the drives and the cable shields have been grounded properly.
■ Check if there are no bad contact problems, contact oxidation or short-circuit between the network signals.
■ Check if the two segments of the termination resistors are disposed correctly.
■ Check if the used communication baud rate is not too high and if the cable length is not out of allowed range. In general the network becomes more susceptible to problems, the higher the used communication baud rate.
NOTES!
■
Once the drive is enabled and online, it is now only required that the master reads the drive status and sends the commands as desired for the Soft-Starter SSW-06 operation. The operation logic and the way the data are dealt, depends mainly on the application. So it is required a correct programming and a good knowledge on how to operate the Soft-Starter SSW-06 and how these data are disposed in the I/O area. For correct accessing of the data via network, refer to item 4 in this Manual.■
The indication of E29 occurs whenever Soft-Starter SSW-06 is not communicating cyclical data.In case that a master or tool of configuration is used that uses only not cyclical messages, this error will be indicated even that do not occur errors between the master and Soft-Starter SSW-06.