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Yokogawa DX Serial Driver
Address Type
Format
Range
Data Type
Access
Previous Screen
PreScreen
Boolean
Write Only
Direct Reloading of Configuration
Reset
Boolean
Write Only
* The Admin address type has a value of '1' or 'true' when the user has logged on at the Administrator level
and a value of '0' or 'false' when the user has logged on at the User level.
Math Communication Data
The CD address type is only valid for devices equipped with the math option and write operations to CD
addresses for non-math equipped devices will return an error. Write operations are available only for users
logged in at the Administrator level and will return an error otherwise. Note that CD addresses are initialized
(read) at startup and will not be reread unless the server is restarted or the Reset tag is invoked. For more
information, refer to
Model Name of Device
The Model address type will have a string value of 'DX100' or 'DX200', indicating the model series returned
by the device.
Control Math Execution
The MathControl address type is only available for devices equipped with the math option; otherwise, write
operations to the MathControl tag for non-math equipped devices will return an error.
Control Command and Response
The Command address allows the user to send a string command and receive a string response to and from
the device. This allows the user to send any command to the device, including commands not directly
supported by the driver. This tag is only available to users logged in at the Administrator level; otherwise,
write operations will return an error.
Caution
: Write operations using the Command address should be performed with extreme care.
Notes
:
1. The actual number of addresses available for of each type depends on the configuration of the
Yokogawa device. If the driver finds at Runtime that an address is not present in the device, it will post
an error message and remove the tag from its scan list.
2. Addresses that have Write Only access are assigned a default access of Read/Write. However, data
values are unreadable for these addresses and the associated tags are not included in the scan list.
The current data value for these tags will always be 0 for numeric data types and null string for string
data types.
MV200 Addressing
The driver supports the following addresses for this device. The default data type for each address type is
shown in
bold
.
Measured Channels
Address Type
Format
Range
Data Type
Access
Process Value of Channel
CHxx or CHxx.PV
01-30
Double
, Float
Read Only
Alarm Summary of Channel
CHxx.Alarm
01-30
Short
, Word, Byte
Read Only
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