System Overview ProSafe-COM 3.00
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Appendix A: Integrating DCS and ProSafe-COM
This appendix provides a more detailed description of the way ProSafe-COM communicates with other
systems. This appendix is especially useful for the engineer of the DCS system. The communication
between DCS system and ProSafe-COM can easily be configured by exporting to, or importing from, the
tag file.
Communication by using tags
The communication between ProSafe-COM and other systems is configured by defining tags in the tag
file. Tags can be read and also be written to.
Tag names can be given to physical addresses in the ProSafe safety system, but also to software items in
ProSafe-COM.
A tag consists of:
•
the ProSafe-COM name (maximally 25 characters)
•
the physical address in the ProSafe safety system (ProSafe-PLC), or the address of the ProSafe-
COM software item (maximally 25 characters)
•
Tag data type and event information
•
1 up to 5 logical addresses (maximally 25 characters)
Each logical address is connected to a specific communication channel of ProSafe-COM. Communication
channels are for example V-net, OPC or the serial Modbus RTU interfaces.
Advantages of using tags
Configuring the communication with tags has the following advantages:
•
Each physical address or software item can be assigned to one or more logical addresses. Thus
one and the same physical address or item can easily be addressed by different external systems,
with different logical addresses. One logical address can be e.g. a Modbus address, another a
V-net address.
•
The communication connection between ProSafe-COM and external systems is configured in the
tag file. This allows flexible, concurrent engineering of ProSafe-COM and external systems. The
communication connection can be made, for example, when both DCS system and ProSafe-COM
are completely engineered.
Tag definition in a tag file
Tags are defined in the tag file. Part of a tag file is shown below.
%-----------------------------------------------------------------------------+
| Module specification |
+-----------------------------------------------------------------------------+
Description : ProSafe-COM tag and logical address definition file.
+-----------------------------------------------------------------------------+
| ProSafe-COM Identification definition |
+-----------------------------------------------------------------------------%
[Ident]
delimiter = "#"; % Redefine the text delimiter from " to # %
[Taglist]
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Copyright Yokogawa Europe Solutions B.V.
TI48J01A00-00E Oct 2010
