23.6.17
UNIGATE
®
Feldbus-Gateway UNIGATE
®
CM - PROFIBUS V. 1.6
45
Deutschmann Automation GmbH & Co. KG
Implemented protocols in UNIGATE® CM
14.3.1.6 Bit 7 (MSB): EMCY toggle bit
With this bit the next relevant EMCY message can be transfered to the current data buffer, no
matter whether the data is shown in the fieldbus or not. The counter is lowered by 1, provided
that it does not equal 0.
14.3.1.7 Bit 6: set operational toggle bit
If this bit is changed the Gateway sends the message ’set operational’ to the slaves. This feature
is to be used if some slaves are slower than the master, and are only then ready when the
master already sent this message.
This setting is available from Gateway software-revision 1.1 on.
14.3.1.8 Bit 5: RTR - Request to response
With this bit (transition from 0 -> 1) RTR-telegrams can be sent to any PDO mapped as Rx. This
RTR results in the fact that the addressed PDOs are sent and with it they are updated in the
Gateway.
If the RTR-function is used, at least 1 Rx-PDO has to be mapped. Furthermore the amount of
mapped Rx-PDOs must not exceed 50, since otherwise it will result in an overrun.
This setting is available from Gateway software-revision 2.3 on.
14.3.1.9 Gateway error byte
The Gateway’s current error state itselfcan be shown in the fieldbus as well as the other values
of the node guarding or the slave data.
Setting of the error byte
This setting is available from Gateway software-revision 1.1 on.
14.3.1.10 SDO Obj Mapping
Available from Gateway software-revision 2.2 on!
SDO-transfer through a "window" in the fieldbus (FB). Here the following fixed data record struc-
ture is used in the FB, that is mapped to the FB-data from the FB-index on. With it a difference is
made between:
FB-Idx (In) = Data from the FB-Master (PLC) to UNIGATE
FB-Idx (Out) = Data to the FB-Master (PLC) from UNIGATE
The user has to see to it that enough space is reserved for the longest data record in the FB-
data.
The SDO-transfer is always initiated by the FB-Master and it is completed when Request-no. in
the FB-output-data is identical to the Response-no. in the FB-input-data.
Summary of Contents for UNIGATE CM - PROFIBUS
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