134 • HRVS-DN Communication (ModBus Protocol)
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HRVS-DN Use Memory Type Max Query/Response Parameters
Actual Data 3X References Registers, # 1..150, addressed 0.. 149.
4X References Registers, #257...384 addr. 256..283
Parameter Settings 4X References Registers, # 1..110, addressed 0..109
Hardwired Control Inputs 1X References Inputs, # 1..16, addressed 0..15.
Discrete Serial Commands 0X References Coils, # 1..16, addressed 0..15.
Control Commands 4X ReferencesRegister, # 753, addressed 752.
Notes:
1. Actual Data parameters can be read both at 3X references starting at parameter #1, or (same parameters)
at 4X references starting at parameter #257 (100 hex higher). The additional mapping in 4X references is
designed for the convenience of Modbus Plus users.
2. HRVS-DN can be controlled using the standard discrete commands (Coils, 0x references) or by writing to
parameter setting #753 with function 16. The additional control option using 4X references is designed for
the convenience of Modbus Plus users. To control, write to register #753 (address 752) only! (one register
write, with function 16).
3. Function 3 should be used to read 4X references. Function 4, to read 3x references.
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