Woodward easYgen-3000XT Series, Руководство пользователя, Страница: 798 / 1205

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Example 4: Voltage interface setpoint
The voltage setpoint value must be written to object 21FE (hex), i.e. parameter 510.
A voltage value of 400 V = 400 (dec) = 0190 (hex) is to be transmitted.
• Modbus address = 40000 + (Par. ID + 1) = 40511 •
• Modbus length = 2 (UNSIGNED 32)
•
The high word must be written to the lower address and the low word must be written to
the higher address.
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ᐳ To set the parameter address in ModScan32:
1. ▷
Fig. 297: Modscan32 at address 40511
Analogous to ╚═▷ Chapter 6.5.1.2 set the parameter address as shown in ╚═▷ Fig. 297 .
6.5.1.3 Remotely Changing The Setpoint
It is possible to remotely switch between pre-defined setpoints. This is available for active
power, power factor, frequency, and voltage.
The bits 4 to 7 of parameter 504 ( ╚═▷ “9.2.9 Additional Data Identifier” ) are carrying the
settings and are available in CAN bus and Modbus protocols. Each bit may be used as
input of the according setpoint switching LogicsManager.
ID Parameter Setting range Data type
504 Remote control word 2 Yes / No UNSIGNED 16
Table 116: Remote Control word »504«: switching between setpoints
In order to switch to another setpoint, the respective bit of object 21F8 (hex), i.e.
parameter 504, must be enabled. The following bits are used for this:
Bit “x” of
Parameter
504 ... ... remotely
requests to switch
to ... is available as LogicsManager
command variable ... uses LogicsManager “y”
to switch
Bit 4 Spannungssollwert 2 "04.37 Remote volt. setp. 2" 12920; "86.83 LM: Setp. 2
voltage"
Bit 5 Frequency setpoint 2 "04.38 Remote freq. setp. 2" 12918; "86.81 LM: Setpoint 2
freq."
798 easYgen-3000XT Series B37574
6 Application Field
6.5.1.3 Remotely Changing The Setpoint
Released