Yokogawa FieldMate - Manual (Page 68)

<E Specifications Common to FieldMate Basic and Advance>
E-18
IM 01R01A01-01E 9th Edition : May 31, 2013-00
 Displaying Segment Viewer
If a tag and address are modified in this Tag/Address Assignment window, the Segment Viewer
window will automatically be updated, displaying updated tags/addresses.
NOTE
Notes on Modifying Tags for FOUNDATION fieldbus Devices
1. Specification
 When a tag is modified, the communication connection information (VCR and Link
Object) is automatically cleared. This information is defined in the FOUNDATION fieldbus
specification.
 When a tag is modified, the schedule information of the function block (FB_START_
ENTRY) is automatically cleared. This information is defined in the function specification for
communication cards of National Instruments.
To conclude: When a tag is set, the schedule information and communication connection
information are automatically cleared.
2. Yokogawa Device Operation
When the schedule information of the function block is cleared, the operation of AI Block stops
and the LCD display values (for example, a pressure value in the case of EJA) cannot indicate
the current state.
You need to be careful, because there is a possibility that the displayed PV value (usually, OUT of
AI Block) is different from the actual value. You can confirm the actual value in Device Viewer.
In this case, function block re-scheduling is necessary.
 Device Class Setting
This function changes the device class of a FOUNDATION fieldbus H1 device to Link Master or
Basic.
 Startup
Select Segment Viewer – Select Device – Action to activate Device Class Setting.
E030102E.ai
Select either Basic or Link Master.
Clicking the Set button in the above
window causes this window to
appear.
In order to reflect the device class
setting in the device, the window
prompts you to select whether to
restart the device.
Figure E-3-2 Device Class Setting