Yokogawa YVP110 - Manual (Page 54)

<9. Configuration>
9-4
IM 21B04C01-01E
YVP110 has a PD Tag (CV1001) and node
address (247, or hexadecimal 0xF7) that are set
upon shipment from the factory unless otherwise
specified. If two YVP110s are connected at a time,
one YVP110 will keep the address upon shipment
while the other will have a default address(See
Figure 9.2). To change only the node address,
clear the address once and then set a new node
address. To set the PD Tag, first clear the node
address and clear the PD Tag, then set the PD Tag
and node address again.
Devices whose node address was cleared will
await the default address (randomly chosen from
a range of 248 to 251, or from hexadecimal 0xF8
to 0xFB). At the same time, it is necessary to
specify the device ID in order to correctly specify
the device. The device ID of the YVP110 is
5945430001xxxxxxxx or 5945430007xxxxxxxx.
(The xxxxxxxx at the end of the above device ID is a
total of 8 alphanumeric characters.)
9.5 Communication Setting
To set the communication function, it is necessary
to change the database residing in SM-VFD.
9.5.1 VCR Setting
Set VCR (Virtual Communication Relationship),
which specifies the called party for communication
and resources. YVP110 has 29 or 33 VCRs (with
/EE) whose application can be changed, except for
the first VCR, which is used for management.
YVP110 has VCRs of four types:
Server(QUB) VCR
A Server responds to requests from a host. This
communication needs data exchange. This
type of communication is called QUB (Queued
User-triggered Bidirectional) VCR.
Source (QUU) VCR
A Source multicasts alarms or trends to other
devices. This type of communication is called
QUU (Queued User-triggered Unidirectional)
VCR.
Publisher (BNU) VCR
A Publisher multicasts AI block output to
another function block(s). This type of
communication is called BNU (Buffered
Network-triggered Unidirectional) VCR.
Subscriber (BNU) VCR
A Subscriber receives the data from another
function block(s). This type of communication
is called BNU (Buffered Network-triggered
Unidirectional) VCR.
A Server VCR is capable to respond to requests
from a Client (QUB) VCR after the Client initiates
connection to the Server successfully. A Source
VCR transmits data without established connection.
A Sink (QUU) VCR on another device can receive
it if the Sink is configured so. A Publisher VCR
transmits data when LAS requests so. An explicit
connection is established from Subscriber (BNU)
VCR(s) so that a Subscriber knows the format of
published data.
Parameters must be changed together for each
VCR because modification for each parameter may
cause inconsistent operation.
9.5.2 Function Block Execution Control
According to the instructions given in Section 9.3,
set the execution cycle of the function blocks and
schedule of execution.