Analog I/O
- Last UpdatedJun 30, 2020
- 2 minute read
Complete the analog portion of the cross-reference table by associating Triconex block parameters with model object parameters (also called model variables).
|
Tagname |
Type |
Description |
|
TTL1_LVL |
Input |
Tank Level |
|
TTL1_SPT |
Input |
Tank Level Setpoint |
|
VTL2_DMD |
Output |
Tank Level Controller Demand |
-
Click in the From Engine column of row 1, type DynSimL1 and press Enter. Keep the From Symbol blank.
-
Click in the To Engine column of row 1, type TRISIM1 and press Enter. Click in the To Symbol column of row 1, type TTL1_LVL and press Enter.
-
Click in the Equation column of row 1, type ((TTL1.L/10.0)*3276.0)+819.0 and press Enter.
Note: Some TriStation Data Types use raw counts. Actual analog I/O must be converted to raw counts within the cross reference table.
-
Click in the From Engine column of row 2, type DynSimL1 and press Enter. Click in the From Symbol column of row 2, type SETPOINT and press Enter.
-
Click in the To Engine column of row 2, type TRISIM1 and press Enter. Click in the To Symbol column of row 2, type TTL1_SPT and press Enter.
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Click in the From Engine column of row 3, type TRISIM1 and press Enter. Leave the From Symbol blank. Click in the To Engine column of row 3, type DYNSIML1 and press Enter.
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The TriStation Tagname VTL2_DMD ranges from 0 to 100. The valve, VTL2.OP ranges from 0 to 1. For this reason, a conversion factor must be assigned for the Valve Demand analog output. Click in the Equation column of row 3, type VTL2_DMD*0.01.
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In each Max Scale and Hi Limit column, set the value to 50000.
The completed Analog portion of the Cross Reference list should match the graphic shown below.
