Communication Setting; Vcr Setting - YOKOGAWA Admag TI Series User Manual

4.5

Communication Setting

To set the communication function, it is necessary to change the database residing in SM-VFD.
4.5.1

VCR Setting

Set VCR (Virtual Communication Relationship), which specifies the called party for
communication and resources. This product has 38 VCRs whose application can be changed,
except for the first VCR, which is used for management. This product 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
The output of the function block is sent to the function block of other device. This type
of communication is called BNU (Buffered Network-triggered Unidirectional) VCR.
Subscriber (BNU) VCR
The output of the function block of other device is received by the function block of
this product. This type of communication is called BNU (Buffered Network-triggered
Unidirectional) VCR.
Each VCR has the parameters listed in Table 4.4. Parameters must be changed together for
each VCR because modification of individual parameters may cause inconsistent operation.
Table 4.4 VCR Static Entry
Sub-index
1 FasArTypeAndRole
2 FasDllLocalAddr
FasDllConfigured
3
RemoteAddr
4 FasDllSDAP
FasDllMaxConfirm
5
DelayOnConnect
FasDllMaxConfirm
6
DelayOnData
Parameter Name
<4. Configuration>
Description
Indicates the type and role of communication (VCR). The
following 4 types are used for this product.
0x32: Server
Server (Responds to requests from host.)
0x44: Source
Source (Transmits alarm or trend.)
0x66: Publisher
(The output of the function block is sent to the function
block of other device.)
0x76: Subscriber
(The output of the function block of other device is
received by the function block of this product.)
Sets the address (DLSAP or DLCEP) to specify VCR in this
product.
The range from 20 to F7 in hexadecimal notation is used.
Sets the node address of the called party for communication
and the address (DLSAP or DLCEP) used to specify VCR in
that address. For DLSAP or DLCEP, a range from 20 to F7
in hexadecimal notation is used. Addresses in Subindex 2
and 3 need to be set to the same contents of the VCR as the
called party (local and remote are reversed).
Specifies the quality of communication. Usually, set one of
the following four types.
0x2B: Server
0x01: Source (Alert)
0x03: Source (Trend)
0x91: Publisher/Subscriber
To establish connection for communication, set the maximum
wait time for the called party's response in ms. Typical setting
at factory shipping is 60 seconds (60,000).
For request of data, set the maximum wait time for the called
party's response in ms. Typical setting at factory shipping is
60 seconds (60,000).
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