YOKOGAWA FLXA21, Руководство пользователя

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<5. In-Process Operation>
5-2
IM 12A01A02-72E 3rd Edition : Oct. 01, 2015-00
M (Maintenance):
An alarm category for a detected failure that has a low level of urgency but is a failure
that could develop into a problem causing restrictions in instrument functionality in some
environments.
Classic Status and Condensed Status can be switched by using the Condensed Status/
Diagnosis (PB.COND_STATUS_DIAG) parameter.
5.3 Simulation Function
It is possible to conduct testing for the downstream function blocks or alarm processes. Following
description is how to use and how to set parameters of this function.
n
AI Function Blocks
When the parameters are set in the transducer block, it is necessary to set parameters as shown
in Table 5.1 in the AI function blocks. When Simulate_Enabled in AI function blocks described
at Table 5.1 is set to “1: Enabled”, the each AI function block that set this parameter uses the
simulation value instead of the data from the transducer block.
Table 5.1 Simulation parameters in the AI block
Sub-Index Parameters Description Valid Range Initial Value
1 Simulate_Status Set the data status to be
simulated.
Unsigned 8 0
2 Simulate_Value Set the value of the data to
be simulated.
Float 0
3 Simulate_Enabled Controls the simulation
function of this block.
0: Disabled,
1: Enabled
0: Disabled
5.4 Write lock (Write-protect) function
The transmitter is provided with a write lock (write-protect) function to restrict write operations to
blocks and prevent inadvertent writing of parameter data. To enable this function, use the write
lock switch (Hard W Lock) or the WRITE_LOCKING (Physical block index 34) (Soft W Lock).
The CPU assembly of the transmitter is provided with a write lock switch (refer to Figure 2.3).
When the write lock switch is disabled, set 0 (protected) for WRITE_LOCKING (index 34) of the
physical block to enable the write lock function.
These parameters and issue shall control the parameter access as defined in Table 5.2.
Table 5.2 Access protection
WRITE_LOCK Switch
Physical block
DEVICE_STATUS_1
WRITE_LOCKING
Remote access
possible
Off Write Unlocked Bit is On 2457 (unprotected) YES
— — 0 (protected) NO
On Hard Write Lock Switch
Bit is On.
— NO