Hamilton-sundstrand-company Fuel Metering Valves XVG Manuel d'utilisateur télécharger pdf (Page 35)

- Write 2 to register 3005. Valve will close and reset.

6. To restore the previous R and K values, write the value of R to register 7518

and the value of K to 7520. In case the old values are forgotten and the new

values have not been saved to the valve, reset the valve by turning power off

then on to restore R and K. The following steps will also reset the valve; care

must be taken, valve will close and reset.

RESET valve routine

- Write a password to register 3099.

- Write 1 to register 3005. Wait 100 milliseconds.

- Write 2 to register 3005. Valve will close and reset.

10.4 Download Parameters

All setup parameters, tables 15-20, can be written when you have the appropriate

password. New parameters can be downloaded to the XVG/eXVG as follows:

- Setup proper write-access level for the parameters.

- Write the new values to the registers.

- Perform Save Parameters routine.

10.5 Re-Assign Device Address Procedure

Number

XVG/eXVG Parameter Name Description Type

Write

Access

3005 IDM_SETUPCONNECT Setup Mode: 1=Set Valve in Setup State, 2=Exit

Setup and Reset CPU

U16 W1

3033 IDM_CALFLAGS Calibration Flags U16 W1

3099 IDM_TESTSTR Test string, used for Modbus write access

password.

U16 W0

3540 IDM_SLAVEADDR Modbus slave address. Range: 1 to 247 U16 W2

Table 26: Parameters Used to Assign Device Address

XVG/eXVG default Modbus address is 1. In case the Modbus address is forgotten,

a new address can be assigned by using broadcast messages. Perform the following

steps; send all messages with device address 0:

1. Make a one-to-one connection between the Modbus master and the

XVG/eXVG; no other Modbus device is present on the network.

2. Write a password to register 3099.

3. Write 1 to register 3005.

4. Write the new device address to register 3540.

5. Write 1 to register 3033. Wait 100 milliseconds.

1 2 ... 30 31 32 33 34 35 36

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Hamilton-sundstrand-company Fuel Metering Valves XVG Manuel d'utilisateur Page 35