The data sharer is a virtual device. It allows data sharing among up to 16
target panels on an Ethernet or an RS485 network. Each of the target panels can
have up to 256 words of data to share.
To set up the communication for data sharing,
create a direct link and select Data Sharer (UDP) or Data Sharer (RS485) as the
connected device. The panel address that you can set in the Parameter page of
the Link Properties dialog box must be unique for each sharing panel as it is
used to identify the shared data.
The communication driver for the link
connecting to Data Sharer is responsible for broadcasting the panel's shared
data on the network. For example, if the panel address of a panel is 10 and the
number of the link connecting to Data Sharer is 2, the following Macro command
will cause the communication driver to broadcast the corresponding data on the
network.
2\P10.0 = MOV($u300, 30)
The communication driver receives the
broadcasted shared data on the network automatically. It has a block of memory
to store the shared data. To access a word, use the following address, where m
is the panel address and n is the word number of that panel’s shared data.
Pm.n m=1~16; n=0-255
To access a bit, use the following address,
where b is a hexadecimal number representing the bit number in the specified
word.
Pm.n.b m=1~16; n=0-255; b=0~f
The UDP is used for the data sharing on
Ethernet.
Source.Section 3.4.6 of the PM Designer Software User Manual, Edition 2.0, © Cermate Technologies Inc. (www.cermate.com, service@cermate.com). Reproduced online, with the manual's own figures, by TSL Automation Solutions, authorised Cermate distributor, for users of Cermate HMI panels. PM Designer and PanelMaster are trademarks of Cermate Technologies Inc.
Text and figures are the manufacturer's and may describe features your panel or software version does not have. For a plain-language introduction read the PM Designer guide; for help with a specific panel contact TSL Automation.