Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 43)

<6. IN-PROCESS OPERATION>
6-2
IM 11M12D01-61E
Table 6.1 Alert Object
6.3 Simulation Function
The simulation function simulates the input of a function block and lets it operate as if the data was
received from the transducer block. It is possible to conduct testing for the downstream function
blocks or alarm processes.
A SIMULATE_ENABLE jumper switch is mounted on the AV550G’s CONTROL CARD. This is to
prevent the accidental operation of this function. When this is switched on, simulation is enabled. (See
Figure 6.1.) To initiate the same action from a remote terminal, if REMOTE LOOP TEST SWITCH
is written to SIM_ENABLE_MSG (index 1044) parameter of the resource block, the resulting action
is the same as is taken when the above switch is on. Note that this parameter value is lost when the
power is turned off. In simulation enabled status, an alarm is generated from the resource block, and
other device alarms will be masked; for this reason the simulation must be disabled immediately after
using this function.
The SIMULATE parameter of AI block consists of the elements listed in Table 6.2 below.
Table 6.2 SIMULATE Parameter
Subindex
Parameter
Name
Explanation
Analog Alert
Discrete
Alert
Update Alert
Block Index Index of block from which alert is generated 1 1 1
Alert Key Alert Key copied from the block 2 2 2
Standard Type Type of the alert 3 3 3
4 4 4
5 5 5
6 6 6
Mft Type Alert Name identified by manufacturer specific DD
Message Type
Priority Priority of the alarm
Reason for Alert
7 7 7 Time Stamp Time when this alert is first detected
8 8 Subcode Enumerated cause of this alert
9 9 Value Value of referenced data
10 10 Relative Index Relative Index of referenced data
8 Static Revision Value of static revision (ST_REV) of the block
9 11 11 Unit Index Unit code of referenced data
T0602.ai
T0603.ai
Sub-
index
Parameters Description
1 Simulate Status Sets the data status to be simulated.
2 Simulate Value Sets the value of the data to be simulated.
3 Transducer Status Displays the data status from the transducer block.
It cannot be changed.
4 Transducer Value Displays the data value from the transducer block.
It cannot be changed.
5 Simulate En/Disable Controls the simulation function of this block.
1: Disabled (standard)
2: Active(simulation)